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Altimmune, Inc. 2025-2026 Proxy Voting Records

Compiled from SEC Form N-PX filings and Altimmune, Inc.’s Form 8-K (Item 5.07 on EDGAR). Page generated 02 October 2026.

29Reported items
187Asset managers
3,793Fund votes
2026-04-16Main meeting date

Proxy season: 2023-2024 2024-2025 2025-2026

Explore Altimmune, Inc. in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by Altimmune, Inc.

These tallies are Altimmune, Inc.’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K (Item 5.07, “Submission of Matters to a Vote of Security Holders”). They cover every share voted at the meeting, not just the funds that file Form N-PX. Altimmune, Inc. reported 2 meetings in this season; each is tabulated separately below, with its own filing.

Altimmune, Inc. — official shareholder meeting results, meeting held 2026-04-16 (Form 8-K)
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Outcome
Elect Director: Jerome Durso, Chairman	47,577,875	--	--	4,836,906	35,855,584	Majority: yes
Elect Director: John M. Gill	46,242,497	--	--	6,172,284	35,855,584	Majority: yes
Elect Director: Philip L. Hodges	45,094,369	--	--	7,320,412	35,855,584	Majority: yes
Elect Director: Diane Jorkasky, M.D.	45,332,124	--	--	7,082,657	35,855,584	Majority: yes
Elect Director: Teri Lawver	44,926,060	--	--	7,488,721	35,855,584	Majority: yes
Elect Director: Wayne Pisano	45,114,119	--	--	7,300,662	35,855,584	Majority: yes
Elect Director: Mitchel Sayare, Ph.D.	45,194,158	--	--	7,220,623	35,855,584	Majority: yes
Elect Director: Klaus O. Schafer, M.D., MPH	44,722,328	--	--	7,692,453	35,855,584	Majority: yes
Elect Director: Catherine Sohn, Pharm D	45,298,692	--	--	7,116,089	35,855,584	Majority: yes
Proposal 2: Ratification of the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the year ending December 31, 2026	84,959,584	1,771,538	1,539,243	--	--	Majority: yes
Proposal 3: Advisory vote on the Compensation of the Company's named executive officers as disclosed in the Proxy Statement pursuant to the SEC's compensation rules (referred to as the "say-on-pay" proposal)	39,928,184	12,026,081	460,516	--	35,855,584	Majority: yes
Proposal 4: Vote to approve an amendment to the Company's Amended and Restated Certificate of Incorporation, as amended to increase the number of authorized shares of the Company's common stock from 200,000,000 to 400,000,000	63,684,172	24,151,522	434,671	--	--	Majority: yes
Proposal 5: Vote to approve an amendment to the Company's 2019 Employee Stock Purchase Plan (the "2019 ESPP") to increase the number of shares of the Company's common stock reserved under the 2019 ESPP from 403,500 to 1,108,827	43,616,919	8,572,159	225,703	--	35,855,584	Majority: yes
Proposal 6: Vote to authorize the adjournment of the 2026 Annual Meeting to enable the Board of Directors to solicit additional proxies	68,318,332	18,755,920	1,196,113	--	--	Majority: yes

Source: Altimmune, Inc., Form 8-K — read the filing on EDGAR.

Altimmune, Inc. — official shareholder meeting results, meeting held 2025-09-25 (Form 8-K)
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Outcome
Elect Director: Jerome Durso, Chairman	20,607,586	--	--	1,229,401	29,851,129	Majority: yes
Elect Director: Vipin K. Garg, Ph.D.	17,425,330	--	--	4,411,657	29,851,129	Majority: yes
Elect Director: John M. Gill	18,050,621	--	--	3,786,366	29,851,129	Majority: yes
Elect Director: Philip L. Hodges	14,680,278	--	--	7,156,709	29,851,129	Majority: yes
Elect Director: Diane Jorkasky, M.D.	14,778,350	--	--	7,058,637	29,851,129	Majority: yes
Elect Director: Teri Lawver	16,535,619	--	--	5,301,368	29,851,129	Majority: yes
Elect Director: Wayne Pisano	18,052,060	--	--	3,784,927	29,851,129	Majority: yes
Elect Director: Mitchel Sayare, Ph.D.	17,619,208	--	--	4,217,779	29,851,129	Majority: yes
Elect Director: Klaus O. Schafer, M.D., MPH	14,643,908	--	--	7,193,079	29,851,129	Majority: yes
Elect Director: Catherine Sohn, Pharm D	14,454,283	--	--	7,382,704	29,851,129	Majority: yes
Proposal 2: Ratification of the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the year ending December 31, 2025	48,959,891	1,355,769	1,372,456	--	--	Majority: yes
Proposal 3: Advisory vote on the Compensation of the Company's named executive officers as disclosed in the Proxy Statement pursuant to the SEC's compensation rules (referred to as the "say-on-pay" proposal)	14,885,881	6,683,682	267,424	--	29,851,129	Majority: yes
Proposal 4: Vote to authorize the adjournment of the 2025 Annual Meeting to enable the Board of Directors to solicit additional proxies	33,695,815	16,363,206	1,629,095	--	--	Majority: yes

Source: Altimmune, Inc., Form 8-K — read the filing on EDGAR.

How asset managers voted at the Altimmune, Inc. 2025-2026 meetings

Each item below shows how the 187 asset managers that disclosed a Altimmune, Inc. vote in their SEC Form N-PX filings actually voted. Share totals are the shares those managers' funds voted, summed across every fund they report. These are reported items, not a count of the ballot: fund filings describe one ballot item in different words. Two descriptions are shown as one item only on evidence — the same text (or one cut short of the other), the same director nominee, or a match to the same row of Altimmune, Inc.’s own Form 8-K tally — never because they merely read alike. A description that could not be joined that way is listed on its own, so one ballot item can appear more than once.

1. HOLD AN ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS AS DISCLOSED IN THE ATTACHED PROXY STATEMENT.

SECTION 14A SAY-ON-PAY VOTESMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 7 wordings of this item as funds reported it.

77% Majority: yes · of votes cast

FOR 77%AGAINST 23%

FOR: 39,928,184AGAINST: 12,026,081

Altimmune, Inc.’s own tally for this item (“Proposal 3: Advisory vote on the Compensation of the Company's named executive officers as disclosed in the Proxy Statement pursuant to the SEC's compensation rules (referred to as the "say-on-pay" proposal)”): 39,928,184 for, 12,026,081 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 31% for, 9% against (40% of the company cast a for/against vote).

The 155 asset managers below cast 91% of the shares they voted on this item FOR (32,349,069 for, 3,245,059 against).

FOR 91%9%

FOR: 32,349,069 (90.8%)AGAINST: 3,245,059 (9.1%)ABSTAIN: 24,283 (0.1%)

Largest asset managers voting on “HOLD AN ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS AS DISCLOSED IN THE ATTACH” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	10,164,587	4,189	1	For
BlackRock	5,903,482	8,191	0	For
State Street	2,753,527	2,503	0	For
Nuveen	2,287,909	0	0	For
TIAA	2,279,650	0	0	For
Fidelity	1,809,277	0	0	For
Two Sigma	1,489,632	0	0	For
GEODE CAPITAL MANAGEMENT, LLC	1,333,462	0	0	For
Alyeska Investment Group, L.P.	0	1,220,651	0	Against
Charles Schwab	523,049	0	0	For
DE Shaw	478,168	0	0	For
MARSHALL WACE, LLP	0	435,508	0	Against
Northern Trust	420,068	2,659	0	For
Dimensional	0	299,672	0	Against
Baird	0	237,522	0	Against
STIFEL NICOLAUS & CO INC \MO\	207,430	0	0	For
Equitable	139,645	48,190	0	For
PARAMETRIC PORTFOLIO ASSOCIATES LLC	184,652	0	0	For
MELLON INVESTMENTS Corp	174,453	0	0	For
Janney Montgomery Scott LLC	0	173,110	0	Against
Wellington	0	163,368	0	Against
Goldman Sachs	158,544	0	0	For
Direxion Shares ETF Trust	116,976	0	0	For
Rafferty Asset Management, LLC	116,976	0	0	For
Allianz	0	104,792	0	Against

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

2. HOLD AN ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS AS DISCLOSED IN THE ATTACHED PROXY STATEMENT.

SECTION 14A SAY-ON-PAY VOTESMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 4 wordings of this item as funds reported it.

69% Majority: yes · of votes cast

FOR 69%AGAINST 31%

FOR: 14,885,881AGAINST: 6,683,682

Altimmune, Inc.’s own tally for this item (“Proposal 3: Advisory vote on the Compensation of the Company's named executive officers as disclosed in the Proxy Statement pursuant to the SEC's compensation rules (referred to as the "say-on-pay" proposal)”): 14,885,881 for, 6,683,682 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 11% for, 5% against (17% of the company cast a for/against vote).

The 124 asset managers below cast 72% of the shares they voted on this item FOR (7,416,174 for, 2,943,292 against).

FOR 72%AGAINST 28%

FOR: 7,416,174 (71.6%)AGAINST: 2,943,292 (28.4%)ABSTAIN: 3,555 (0.0%)

Largest asset managers voting on “HOLD AN ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS AS DISCLOSED IN THE ATTACH” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Vote
BlackRock	2,134,892	5,397	For
Vanguard	1,523,153	1,346	For
Two Sigma	0	1,011,730	Against
State Street	813,536	3,723	For
Point72	0	759,500	Against
Federated Hermes	615,632	0	For
Fidelity	607,123	0	For
Northern Trust	316,703	3,479	For
Goldman Sachs	227,964	0	For
Wellington	190,017	0	For
Sculptor Capital II LP	0	188,700	Against
MELLON INVESTMENTS Corp	0	155,988	Against
Nuveen	139,544	0	For
TIAA	137,958	0	For
PNC BANK, NATIONAL ASSOCIATION	93,676	0	For
Direxion Shares ETF Trust	0	79,023	Against
Rafferty Asset Management, LLC	0	79,023	Against
Dimensional	0	78,379	Against
T. Rowe Price	0	73,562	Against
NISA INVESTMENT ADVISORS, LLC	0	66,395	Against
GEODE CAPITAL MANAGEMENT, LLC	63,971	0	For
Baird	59,440	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Nationwide	50,509	0	For
DE Shaw	0	47,464	Against

Showing the 25 largest of 124 asset managers. See all 124 in the interactive database.

3. Vote to approve an amendment to the Company's 2019 Employee Stock Purchase Plan to increase the number of shares of the Company's common stock reserved under the Company's 2019 Employee Stock Purchase Plan.

COMPENSATIONMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 2 wordings of this item as funds reported it.

84% Majority: yes · of votes cast

FOR 84%AGAINST 16%

FOR: 43,616,919AGAINST: 8,572,159

Altimmune, Inc.’s own tally for this item (“Proposal 5: Vote to approve an amendment to the Company's 2019 Employee Stock Purchase Plan (the "2019 ESPP") to increase the number of shares of the Company's common stock reserved under the 2019 ESPP from 403,500 to 1,”): 43,616,919 for, 8,572,159 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 33% for, 7% against (40% of the company cast a for/against vote).

The 46 asset managers below cast 99.8% of the shares they voted on this item FOR (19,606,693 for, 24,307 against).

FOR 99.8%

FOR: 19,606,693 (99.9%)AGAINST: 24,307 (0.1%)

Largest asset managers voting on “Vote to approve an amendment to the Company's 2019 Employee Stock Purchase Plan to increase the number of shar” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Vote
Vanguard	9,422,734	25	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,024	0	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Against
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 46 asset managers. See all 46 in the interactive database.

4. APPROVE THE AUTHORIZATION TO ADJOURN THE ANNUAL MEETING, IF NECESSARY OR APPROPRIATE, TO SOLICIT ADDITIONAL PROXIES IN FAVOR OF THE FOREGOING PROPOSALS IF THERE ARE NOT SUFFICIENT VOTES TO APPROVE THE PROPOSALS.

CORPORATE GOVERNANCEMajority of the votes cast: yes

Meeting held 2026-04-16.

78% Majority: yes · of votes cast

FOR 78%AGAINST 22%

FOR: 68,318,332AGAINST: 18,755,920

Altimmune, Inc.’s own tally for this item (“Proposal 6: Vote to authorize the adjournment of the 2026 Annual Meeting to enable the Board of Directors to solicit additional proxies”): 68,318,332 for, 18,755,920 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 52.5% for, 14% against (67% of the company cast a for/against vote).

The 45 asset managers below cast 91% of the shares they voted on this item FOR (17,894,346 for, 1,711,872 against).

FOR 91%9%

FOR: 17,894,346 (91.2%)AGAINST: 1,711,872 (8.7%)ABSTAIN: 24,283 (0.1%)

Largest asset managers voting on “APPROVE THE AUTHORIZATION TO ADJOURN THE ANNUAL MEETING, IF NECESSARY OR APPROPRIATE, TO SOLICIT ADDITIONAL PR” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	9,418,572	4,186	1	For
BlackRock	3,438,998	0	0	For
TIAA	2,279,650	0	0	For
Fidelity	1,427,659	0	0	For
State Street	4,239	1,319,785	0	Against
Charles Schwab	0	261,479	0	Against
Dimensional	205,304	0	0	For
Equitable	187,835	0	0	For
Direxion Shares ETF Trust	116,976	0	0	For
Delaware/Macquarie	100,000	0	0	For
ProShares	92,786	0	0	For
ALPS ETF Trust	92,228	0	0	For
GMO	65,951	0	0	For
ETFis Series Trust I	54,791	0	0	For
Lincoln Financial	0	52,700	0	Against
American Century	52,036	0	0	For
Northern Trust	48,549	0	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	0	For
AIG/SunAmerica	44,451	0	0	For
Brighthouse	17,842	0	24,282	Abstain
Global X	0	40,346	0	Against
Pacific Life	33,928	0	0	For
John Hancock	26,593	0	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	0	For
Bridge Builder Trust	17,279	0	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

5. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Catherine Sohn, Pharm D

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%14%

FOR: 45,298,692WITHHELD: 7,116,089

Altimmune, Inc.’s own tally for this item (“Elect Director: Catherine Sohn, Pharm D”): 45,298,692 for, 7,116,089 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 35% for, 5% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,599,242 for, 0 against).

FOR 99.8%

FOR: 19,599,242 (99.8%)ABSTAIN: 31,258 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,422,738	21	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,024	0	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

6. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Diane Jorkasky, M.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%14%

FOR: 45,332,124WITHHELD: 7,082,657

Altimmune, Inc.’s own tally for this item (“Elect Director: Diane Jorkasky, M.D.”): 45,332,124 for, 7,082,657 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 35% for, 5% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,606,198 for, 0 against).

FOR 99.8%

FOR: 19,606,198 (99.9%)ABSTAIN: 24,302 (0.1%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,422,739	20	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,024	0	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

7. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Jerome Durso

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

91% Majority: yes · of votes cast

FOR 91%9%

FOR: 47,577,875WITHHELD: 4,836,906

Altimmune, Inc.’s own tally for this item (“Elect Director: Jerome Durso, Chairman”): 47,577,875 for, 4,836,906 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 37% for, 4% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,599,236 for, 0 against).

FOR 99.8%

FOR: 19,599,236 (99.8%)ABSTAIN: 31,264 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,422,745	14	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,011	13	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

8. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: John M. Gill

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

88% Majority: yes · of votes cast

FOR 88%12%

FOR: 46,242,497WITHHELD: 6,172,284

Altimmune, Inc.’s own tally for this item (“Elect Director: John M. Gill”): 46,242,497 for, 6,172,284 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 36% for, 5% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,588,074 for, 0 against).

FOR 99.7%

FOR: 19,588,074 (99.8%)ABSTAIN: 42,426 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,414,004	8,755	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,322,150	1,874	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

9. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Mitchel Sayare, Ph.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%14%

FOR: 45,194,158WITHHELD: 7,220,623

Altimmune, Inc.’s own tally for this item (“Elect Director: Mitchel Sayare, Ph.D.”): 45,194,158 for, 7,220,623 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 35% for, 6% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,595,027 for, 0 against).

FOR 99.8%

FOR: 19,595,027 (99.8%)ABSTAIN: 35,473 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,414,002	8,757	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,322,150	1,874	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

10. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Philip L. Hodges

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%14%

FOR: 45,094,369WITHHELD: 7,320,412

Altimmune, Inc.’s own tally for this item (“Elect Director: Philip L. Hodges”): 45,094,369 for, 7,320,412 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 35% for, 6% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,590,924 for, 0 against).

FOR 99.7%

FOR: 19,590,924 (99.8%)ABSTAIN: 39,577 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,409,847	12,912	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,322,202	1,822	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

11. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Teri Lawver

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%WITHHELD 14%

FOR: 44,926,060WITHHELD: 7,488,721

Altimmune, Inc.’s own tally for this item (“Elect Director: Teri Lawver”): 44,926,060 for, 7,488,721 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 34% for, 6% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,599,241 for, 0 against).

FOR 99.8%

FOR: 19,599,241 (99.8%)ABSTAIN: 31,259 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,422,737	22	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,024	0	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

12. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Wayne Pisano

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 4 wordings of this item as funds reported it.

86% Majority: yes · of votes cast

FOR 86%14%

FOR: 45,114,119WITHHELD: 7,300,662

Altimmune, Inc.’s own tally for this item (“Elect Director: Wayne Pisano”): 45,114,119 for, 7,300,662 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 35% for, 6% withheld (40% of the company cast a for/withheld vote).

The 45 asset managers below cast 100% of the shares they voted on this item FOR (19,461,529 for, 0 against).

FOR 99.1%

FOR: 19,461,529 (99.1%)ABSTAIN: 168,971 (0.9%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,414,000	8,759	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,322,202	1,822	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	0	100,000	Abstain
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	0	26,593	Abstain
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

13. VOTE TO APPROVE AN AMENDMENT TO THE COMPANY'S AMENDED AND RESTATED CERTIFICATE OF INCORPORATION, AS AMENDED TO INCREASE THE NUMBER OF AUTHORIZED SHARES OF THE COMPANY'S COMMON STOCK.

CAPITAL STRUCTUREMajority of the votes cast: yes

Meeting held 2026-04-16.

73% Majority: yes · of votes cast

FOR 73%AGAINST 27%

FOR: 63,684,172AGAINST: 24,151,522

Altimmune, Inc.’s own tally for this item (“Proposal 4: Vote to approve an amendment to the Company's Amended and Restated Certificate of Incorporation, as amended to increase the number of authorized shares of the Company's common stock from 200,000,000 to 400,00”): 63,684,172 for, 24,151,522 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 48.9% for, 19% against (67% of the company cast a for/against vote).

The 45 asset managers below cast 99.8% of the shares they voted on this item FOR (19,606,170 for, 24,329 against).

FOR 99.8%

FOR: 19,606,170 (99.9%)AGAINST: 24,329 (0.1%)

Largest asset managers voting on “VOTE TO APPROVE AN AMENDMENT TO THE COMPANY'S AMENDED AND RESTATED CERTIFICATE OF INCORPORATION, AS AMENDED TO” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Vote
Vanguard	9,422,724	34	For
BlackRock	3,438,998	0	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,324,011	13	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Against
Global X	40,346	0	For
Pacific Life	33,928	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

14. VOTE TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE COMPANY'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE YEAR ENDING DECEMBER 31, 2026.

AUDIT-RELATEDMajority of the votes cast: yes

Meeting held 2026-04-16.

98% Majority: yes · of votes cast

FOR 98%

FOR: 84,959,584AGAINST: 1,771,538

Altimmune, Inc.’s own tally for this item (“Proposal 2: Ratification of the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the year ending December 31, 2026”): 84,959,584 for, 1,771,538 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 65% for, 1% against (67% of the company cast a for/against vote).

The 45 asset managers below cast 99.9% of the shares they voted on this item FOR (19,606,163 for, 55 against).

FOR 99.8%

FOR: 19,606,163 (99.9%)AGAINST: 55 (0.0%)ABSTAIN: 24,283 (0.1%)

Largest asset managers voting on “VOTE TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE COMPANY'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING ” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	9,422,755	3	1	For
BlackRock	3,438,998	0	0	For
TIAA	2,279,650	0	0	For
Fidelity	1,427,659	0	0	For
State Street	1,323,972	52	0	For
Charles Schwab	261,479	0	0	For
Dimensional	205,304	0	0	For
Equitable	187,835	0	0	For
Direxion Shares ETF Trust	116,976	0	0	For
Delaware/Macquarie	100,000	0	0	For
ProShares	92,786	0	0	For
ALPS ETF Trust	92,228	0	0	For
GMO	65,951	0	0	For
ETFis Series Trust I	54,791	0	0	For
Lincoln Financial	52,700	0	0	For
American Century	52,036	0	0	For
Northern Trust	48,549	0	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	0	For
AIG/SunAmerica	44,451	0	0	For
Brighthouse	17,842	0	24,282	Abstain
Global X	40,346	0	0	For
Pacific Life	33,928	0	0	For
John Hancock	26,593	0	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	0	For
Bridge Builder Trust	17,279	0	0	For

Showing the 25 largest of 45 asset managers. See all 45 in the interactive database.

15. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Vipin K. Garg, Ph.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

80% Majority: yes · of votes cast

FOR 80%WITHHELD 20%

FOR: 17,425,330WITHHELD: 4,411,657

Altimmune, Inc.’s own tally for this item (“Elect Director: Vipin K. Garg, Ph.D.”): 17,425,330 for, 4,411,657 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 13% for, 3% withheld (17% of the company cast a for/withheld vote).

The 44 asset managers below cast 100% of the shares they voted on this item FOR (4,145,122 for, 0 against).

FOR 99.7%

FOR: 4,145,122 (99.7%)ABSTAIN: 11,084 (0.3%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,109,910	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,663	167	For
Delaware/Macquarie	100,000	0	For
Equitable	84,003	0	For
Direxion Shares ETF Trust	79,023	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	38,993	0	For
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	19,935	0	For
John Hancock	15,181	0	For
Bridge Builder Trust	14,975	0	For
DWS	11,829	0	For
SEI	11,800	0	For
Pacific Life	10,419	0	For
Roundhill ETF Trust	9,166	0	For
Blackstone Alternative Investment Funds	8,600	0	For
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	7,680	0	For

Showing the 25 largest of 44 asset managers. See all 44 in the interactive database.

16. VOTE TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE COMPANY'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE YEAR ENDING DECEMBER 31, 2025.

AUDIT-RELATEDMajority of the votes cast: yes

Meeting held 2025-09-25.

97% Majority: yes · of votes cast

FOR 97%

FOR: 48,959,891AGAINST: 1,355,769

Altimmune, Inc.’s own tally for this item (“Proposal 2: Ratification of the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the year ending December 31, 2025”): 48,959,891 for, 1,355,769 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 38% for, 1% against (39% of the company cast a for/against vote).

The 44 asset managers below cast 99.9% of the shares they voted on this item FOR (4,152,643 for, 8 against).

FOR 99.9%

FOR: 4,152,643 (99.9%)AGAINST: 8 (0.0%)ABSTAIN: 3,555 (0.1%)

Largest asset managers voting on “VOTE TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE COMPANY'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING ” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Vote
Vanguard	1,476,505	0	For
BlackRock	1,109,910	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,822	8	For
Delaware/Macquarie	100,000	0	For
Equitable	84,003	0	For
Direxion Shares ETF Trust	79,023	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	38,993	0	For
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	19,935	0	For
John Hancock	15,181	0	For
Bridge Builder Trust	14,975	0	For
DWS	11,829	0	For
SEI	11,800	0	For
Pacific Life	10,419	0	For
Roundhill ETF Trust	9,166	0	For
Blackstone Alternative Investment Funds	8,600	0	For
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	7,680	0	For

Showing the 25 largest of 44 asset managers. See all 44 in the interactive database.

17. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Klaus O. Schafer, M.D., MPH

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

67% Majority: yes · of votes cast

FOR 67%WITHHELD 33%

FOR: 14,643,908WITHHELD: 7,193,079

Altimmune, Inc.’s own tally for this item (“Elect Director: Klaus O. Schafer, M.D., MPH”): 14,643,908 for, 7,193,079 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 11% for, 6% withheld (17% of the company cast a for/withheld vote).

The 43 asset managers below cast 100% of the shares they voted on this item FOR (3,771,787 for, 0 against).

FOR 91%9%

FOR: 3,771,787 (91.0%)ABSTAIN: 372,619 (9.0%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,109,910	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,482	348	For
Delaware/Macquarie	0	100,000	Abstain
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	0	79,023	Abstain
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	0	38,993	Abstain
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	0	19,935	Abstain
John Hancock	0	15,181	Abstain
Bridge Builder Trust	14,975	0	For
DWS	0	11,829	Abstain
Pacific Life	10,419	0	For
Roundhill ETF Trust	0	9,166	Abstain
Blackstone Alternative Investment Funds	0	8,600	Abstain
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	0	7,680	Abstain
Calvert	0	6,955	Abstain

Showing the 25 largest of 43 asset managers. See all 43 in the interactive database.

18. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Catherine Sohn, Pharm D

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

66% Majority: yes · of votes cast

FOR 66%WITHHELD 34%

FOR: 14,454,283WITHHELD: 7,382,704

Altimmune, Inc.’s own tally for this item (“Elect Director: Catherine Sohn, Pharm D”): 14,454,283 for, 7,382,704 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 11% for, 6% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (2,545,722 for, 0 against).

FOR 62%ABSTAIN 38%

FOR: 2,545,722 (61.7%)ABSTAIN: 1,583,553 (38.3%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	0	1,099,602	Abstain
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,649	181	For
Delaware/Macquarie	0	100,000	Abstain
Equitable	0	84,003	Abstain
Direxion Shares ETF Trust	0	79,023	Abstain
QUANTITATIVE MASTER SERIES LLC	0	54,631	Abstain
Lincoln Financial	52,700	0	For
Nationwide	50,507	2	For
AIG/SunAmerica	0	38,993	Abstain
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	0	19,935	Abstain
John Hancock	0	15,181	Abstain
Bridge Builder Trust	0	14,975	Abstain
DWS	0	11,829	Abstain
Pacific Life	0	10,419	Abstain
Roundhill ETF Trust	0	9,166	Abstain
Blackstone Alternative Investment Funds	0	8,600	Abstain
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	0	7,680	Abstain
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

19. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Diane Jorkasky, M.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

68% Majority: yes · of votes cast

FOR 68%WITHHELD 32%

FOR: 14,778,350WITHHELD: 7,058,637

Altimmune, Inc.’s own tally for this item (“Elect Director: Diane Jorkasky, M.D.”): 14,778,350 for, 7,058,637 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 11% for, 5% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (3,762,053 for, 0 against).

FOR 91%9%

FOR: 3,762,053 (91.1%)ABSTAIN: 367,222 (8.9%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,649	181	For
Delaware/Macquarie	0	100,000	Abstain
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	0	79,023	Abstain
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	0	38,993	Abstain
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	0	19,935	Abstain
John Hancock	0	15,181	Abstain
Bridge Builder Trust	14,975	0	For
DWS	0	11,829	Abstain
Pacific Life	10,419	0	For
Roundhill ETF Trust	0	9,166	Abstain
Blackstone Alternative Investment Funds	0	8,600	Abstain
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	0	7,680	Abstain
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

20. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Jerome Durso

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

94% Majority: yes · of votes cast

FOR 94%

FOR: 20,607,586WITHHELD: 1,229,401

Altimmune, Inc.’s own tally for this item (“Elect Director: Jerome Durso, Chairman”): 20,607,586 for, 1,229,401 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 16% for, 1.0% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (4,125,720 for, 0 against).

FOR 99.9%

FOR: 4,125,720 (99.9%)ABSTAIN: 3,555 (0.1%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Vote
Vanguard	1,476,505	For
BlackRock	1,099,602	For
Fidelity	323,062	For
Federated Hermes	293,296	For
TIAA	137,958	For
State Street	130,830	For
Delaware/Macquarie	100,000	For
Equitable	84,003	For
Direxion Shares ETF Trust	79,023	For
QUANTITATIVE MASTER SERIES LLC	54,631	For
Lincoln Financial	52,700	For
Nationwide	50,509	For
AIG/SunAmerica	38,993	For
Global X	38,881	For
Charles Schwab	23,353	For
Dimensional	19,935	For
John Hancock	15,181	For
Bridge Builder Trust	14,975	For
DWS	11,829	For
Pacific Life	10,419	For
Roundhill ETF Trust	9,166	For
Blackstone Alternative Investment Funds	8,600	For
MASTER INVESTMENT PORTFOLIO	7,870	For
T. Rowe Price	7,680	For
Calvert	6,955	For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

21. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: John M. Gill

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

83% Majority: yes · of votes cast

FOR 83%WITHHELD 17%

FOR: 18,050,621WITHHELD: 3,786,366

Altimmune, Inc.’s own tally for this item (“Elect Director: John M. Gill”): 18,050,621 for, 3,786,366 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 14% for, 3% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (4,069,993 for, 0 against).

FOR 99%

FOR: 4,069,993 (98.6%)ABSTAIN: 59,282 (1.4%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,655	175	For
Delaware/Macquarie	100,000	0	For
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	79,023	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	38,993	0	For
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	19,935	0	For
John Hancock	15,181	0	For
Bridge Builder Trust	14,975	0	For
DWS	11,829	0	For
Pacific Life	10,419	0	For
Roundhill ETF Trust	9,166	0	For
Blackstone Alternative Investment Funds	8,600	0	For
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	7,680	0	For
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

22. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Mitchel Sayare, Ph.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

81% Majority: yes · of votes cast

FOR 81%WITHHELD 19%

FOR: 17,619,208WITHHELD: 4,217,779

Altimmune, Inc.’s own tally for this item (“Elect Director: Mitchel Sayare, Ph.D.”): 17,619,208 for, 4,217,779 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 14% for, 3% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (4,069,993 for, 0 against).

FOR 99%

FOR: 4,069,993 (98.6%)ABSTAIN: 59,282 (1.4%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,655	175	For
Delaware/Macquarie	100,000	0	For
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	79,023	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	38,993	0	For
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	19,935	0	For
John Hancock	15,181	0	For
Bridge Builder Trust	14,975	0	For
DWS	11,829	0	For
Pacific Life	10,419	0	For
Roundhill ETF Trust	9,166	0	For
Blackstone Alternative Investment Funds	8,600	0	For
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	7,680	0	For
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

23. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Philip L. Hodges

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

67% Majority: yes · of votes cast

FOR 67%WITHHELD 33%

FOR: 14,680,278WITHHELD: 7,156,709

Altimmune, Inc.’s own tally for this item (“Elect Director: Philip L. Hodges”): 14,680,278 for, 7,156,709 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 11% for, 5% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (3,761,479 for, 0 against).

FOR 91%9%

FOR: 3,761,479 (91.1%)ABSTAIN: 367,796 (8.9%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,482	348	For
Delaware/Macquarie	0	100,000	Abstain
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	0	79,023	Abstain
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	0	38,993	Abstain
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	0	19,935	Abstain
John Hancock	0	15,181	Abstain
Bridge Builder Trust	14,975	0	For
DWS	0	11,829	Abstain
Pacific Life	10,419	0	For
Roundhill ETF Trust	0	9,166	Abstain
Blackstone Alternative Investment Funds	0	8,600	Abstain
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	0	7,680	Abstain
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

24. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Teri Lawver

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

76% Majority: yes · of votes cast

FOR 76%WITHHELD 24%

FOR: 16,535,619WITHHELD: 5,301,368

Altimmune, Inc.’s own tally for this item (“Elect Director: Teri Lawver”): 16,535,619 for, 5,301,368 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 13% for, 4% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (4,125,720 for, 0 against).

FOR 99.9%

FOR: 4,125,720 (99.9%)ABSTAIN: 3,555 (0.1%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Vote
Vanguard	1,476,505	For
BlackRock	1,099,602	For
Fidelity	323,062	For
Federated Hermes	293,296	For
TIAA	137,958	For
State Street	130,830	For
Delaware/Macquarie	100,000	For
Equitable	84,003	For
Direxion Shares ETF Trust	79,023	For
QUANTITATIVE MASTER SERIES LLC	54,631	For
Lincoln Financial	52,700	For
Nationwide	50,509	For
AIG/SunAmerica	38,993	For
Global X	38,881	For
Charles Schwab	23,353	For
Dimensional	19,935	For
John Hancock	15,181	For
Bridge Builder Trust	14,975	For
DWS	11,829	For
Pacific Life	10,419	For
Roundhill ETF Trust	9,166	For
Blackstone Alternative Investment Funds	8,600	For
MASTER INVESTMENT PORTFOLIO	7,870	For
T. Rowe Price	7,680	For
Calvert	6,955	For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

25. Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2026 Annual Meeting of Stockholders: Wayne Pisano

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-25.

Combines 3 wordings of this item as funds reported it.

83% Majority: yes · of votes cast

FOR 83%WITHHELD 17%

FOR: 18,052,060WITHHELD: 3,784,927

Altimmune, Inc.’s own tally for this item (“Elect Director: Wayne Pisano”): 18,052,060 for, 3,784,927 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 14% for, 3% withheld (17% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (4,070,001 for, 0 against).

FOR 99%

FOR: 4,070,001 (98.6%)ABSTAIN: 59,274 (1.4%)

Largest asset managers voting on “Vote to elect the ten nominees named in the attached Proxy Statement as members of the Company's Board of Dire” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	137,958	0	For
State Street	130,663	167	For
Delaware/Macquarie	100,000	0	For
Equitable	35,813	48,190	Abstain
Direxion Shares ETF Trust	79,023	0	For
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Lincoln Financial	52,700	0	For
Nationwide	50,509	0	For
AIG/SunAmerica	38,993	0	For
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	19,935	0	For
John Hancock	15,181	0	For
Bridge Builder Trust	14,975	0	For
DWS	11,829	0	For
Pacific Life	10,419	0	For
Roundhill ETF Trust	9,166	0	For
Blackstone Alternative Investment Funds	8,600	0	For
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	7,680	0	For
Calvert	0	6,955	Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

26. Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Directors for terms expiring at the 2027 Annual Meeting of Stockholders: Klaus O. Schafer, M.D., MPH

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-04-16.

Combines 2 wordings of this item as funds reported it.

85% Majority: yes · of votes cast

FOR 85%WITHHELD 15%

FOR: 44,722,328WITHHELD: 7,692,453

Altimmune, Inc.’s own tally for this item (“Elect Director: Klaus O. Schafer, M.D., MPH”): 44,722,328 for, 7,692,453 withheld, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 34% for, 6% withheld (40% of the company cast a for/withheld vote).

The 37 asset managers below cast 100% of the shares they voted on this item FOR (16,026,385 for, 0 against).

FOR 99.7%

FOR: 16,026,385 (99.8%)ABSTAIN: 34,841 (0.2%)

Largest asset managers voting on “Vote to elect the nine nominees named in the attached Proxy Statement as members of the Company's Board of Dir” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
Vanguard	9,413,862	8,737	For
TIAA	2,279,650	0	For
Fidelity	1,427,659	0	For
State Street	1,322,202	1,822	For
Charles Schwab	261,479	0	For
Dimensional	205,304	0	For
Equitable	187,835	0	For
Direxion Shares ETF Trust	116,976	0	For
Delaware/Macquarie	100,000	0	For
ProShares	92,786	0	For
ALPS ETF Trust	92,228	0	For
GMO	65,951	0	For
ETFis Series Trust I	54,791	0	For
Lincoln Financial	52,700	0	For
American Century	52,036	0	For
Northern Trust	48,549	0	For
AIG/SunAmerica	44,451	0	For
Brighthouse	17,842	24,282	Abstain
Global X	40,346	0	For
Pacific Life	33,928	0	For
Goldman Sachs	15,006	0	For
DWS	11,981	0	For
SEI	11,800	0	For
Victory Capital	11,633	0	For
T. Rowe Price	10,090	0	For

Showing the 25 largest of 37 asset managers. See all 37 in the interactive database.

27. APPROVE THE AUTHORIZATION TO ADJOURN THE ANNUAL MEETING, IF NECESSARY OR APPROPRIATE, TO SOLICIT ADDITIONAL PROXIES IN FAVOR OF THE FOREGOING PROPOSALS IF THERE ARE NOT SUFFICIENT VOTES TO APPROVE THE PROPOSALS.

CORPORATE GOVERNANCEMajority of the votes cast: yes

Meeting held 2025-09-25.

67% Majority: yes · of votes cast

FOR 67%AGAINST 33%

FOR: 33,695,815AGAINST: 16,363,206

Altimmune, Inc.’s own tally for this item (“Proposal 4: Vote to authorize the adjournment of the 2025 Annual Meeting to enable the Board of Directors to solicit additional proxies”): 33,695,815 for, 16,363,206 against, per its Form 8-K (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 130,221,154 outstanding shares: 26% for, 13% against (38% of the company cast a for/against vote).

The 36 asset managers below cast 88% of the shares they voted on this item FOR (3,437,122 for, 481,125 against).

FOR 88%12%

FOR: 3,437,122 (87.6%)AGAINST: 481,125 (12.3%)ABSTAIN: 3,555 (0.1%)

Largest asset managers voting on “APPROVE THE AUTHORIZATION TO ADJOURN THE ANNUAL MEETING, IF NECESSARY OR APPROPRIATE, TO SOLICIT ADDITIONAL PR” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Vote
Vanguard	1,476,505	0	For
BlackRock	1,099,602	0	For
Fidelity	323,062	0	For
Federated Hermes	293,296	0	For
TIAA	0	137,958	Against
State Street	371	130,459	Against
Direxion Shares ETF Trust	0	79,023	Against
QUANTITATIVE MASTER SERIES LLC	54,631	0	For
Nationwide	50,509	0	For
Equitable	35,813	4,890	For
AIG/SunAmerica	0	38,993	Against
Global X	38,881	0	For
Charles Schwab	23,353	0	For
Dimensional	0	19,935	Against
John Hancock	0	15,181	Against
Bridge Builder Trust	14,975	0	For
DWS	0	11,829	Against
Pacific Life	10,419	0	For
Roundhill ETF Trust	0	9,166	Against
Blackstone Alternative Investment Funds	0	8,600	Against
MASTER INVESTMENT PORTFOLIO	7,870	0	For
T. Rowe Price	0	7,680	Against
Goldman Sachs	6,774	0	For
Jackson National	0	6,307	Against
ProShares	0	5,128	Against

Showing the 25 largest of 36 asset managers. See all 36 in the interactive database.

28. DIRECTOR: K. O. SCHAFER MD MPH

DIRECTOR ELECTIONS

Meeting held 2026-04-16.

Combines 2 wordings of this item as funds reported it.

100% fund support · no official result

FOR 99.9%

The 9 asset managers below cast 100% of the shares they voted on this item FOR (3,568,691 for, 0 against).

FOR: 3,568,691 (100.0%)ABSTAIN: 583 (0.0%)

Largest asset managers voting on “DIRECTOR: K. O. SCHAFER MD MPH” at Altimmune, Inc., 2025-2026
Asset manager	For	Abstain	Vote
BlackRock	3,438,998	0	For
MASTER INVESTMENT PORTFOLIO	45,708	0	For
John Hancock	26,593	0	For
QUANTITATIVE MASTER SERIES LLC	20,785	0	For
Bridge Builder Trust	17,279	0	For
Jackson National	14,368	0	For
Allianz	4,823	0	For
Advisors' Inner Circle Fund III	0	560	Abstain
Vanguard	137	23	For

29. Hold an advisory vote on the compensation of the Company's named executive officers as disclosed in the attached Proxy Statement.

SECTION 14A SAY-ON-PAY VOTES

Reported under meeting date 2026-03-13; no official results on file for that date.

0.9% fund support · no official result

AGAINST 99.1%

The 2 asset managers below cast 0.9% of the shares they voted on this item FOR (6,000 for, 667,837 against).

FOR: 6,000 (0.9%)AGAINST: 667,837 (99.1%)

Largest asset managers voting on “Hold an advisory vote on the compensation of the Company's named executive officers as disclosed in the attach” at Altimmune, Inc., 2025-2026
Asset manager	For	Against	Abstain	Withheld	Vote
SCHRODER INVESTMENT MANAGEMENT GROUP	0	667,837	0	0	Against
Robertson Stephens Wealth Management, LLC	6,000	0	0	0	For

Largest Altimmune, Inc. shareholders voting in 2025-2026

Ranked by the number of Altimmune, Inc. shares each manager voted on the most widely held ballot item of the 2025-2026 meeting, shown as a share of the 130,221,154 shares outstanding at the time of that meeting.

Top Altimmune, Inc. shareholders by shares voted, 2025-2026
#	Asset manager	% of shares outstanding
1	Vanguard	7.81%
2	BlackRock	4.54%
3	State Street	2.12%
4	Nuveen	1.76%
5	TIAA	1.75%
6	Fidelity	1.39%
7	Two Sigma	1.14%
8	GEODE CAPITAL MANAGEMENT, LLC	1.02%
9	Alyeska Investment Group, L.P.	0.94%
10	Charles Schwab	0.40%

Reported Altimmune, Inc. ownership

Positions disclosed to the SEC on Schedules 13D and 13G, Form 13F and the company’s own proxy statement (DEF 14A).

Altimmune, Inc. beneficial owners on record for the 2025-2026 proxy season
Holder	% outstanding	Disclosure
Chen Yu	15.36%	13G
Deep Track Capital, LP	14.91%	13G
VIKING GLOBAL INVESTORS LP	10.29%	13G
RA Capital Management, L.P.	9.98%	13G
BlackRock	9.83%	13F
Vanguard Group	7.29%	13F
State Street	5.49%	13F
Alyeska Master Fund, L.P.	5.48%	DEF14A
Millennium Management	2.50%	13F
Two Sigma	1.90%	13F

Percentages above are of 130,221,154 shares outstanding, as reported by Altimmune, Inc. on its Form 10-Q dated 2026-03-31 (see the filing on EDGAR). This is the count contemporaneous with the 2025-2026 meeting, so the percentages are the ones that were true then, not ones restated against today’s share count.

About this page

Every figure above is derived from filings made with the US Securities and Exchange Commission: Form N-PX, in which registered investment companies and institutional managers disclose how they voted every proxy, and Form 8-K Item 5.07, in which the company reports its own meeting results. Shares outstanding are taken from Altimmune, Inc.’s 10-Q dated 2026-03-31. This page is a static snapshot rebuilt weekly on 02 October 2026; a live search always shows the current data.

At Altimmune, Inc.'s 2 shareholder meetings in the 2025-2026 proxy season (held 2025-09-25 and 2026-04-16), 187 asset managers reported how they voted in their SEC Form N-PX filings, covering 3,793 separate fund positions. Their filings are grouped here into 29 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. On the most widely held item of the season, voted at the meeting held 2026-04-16 — HOLD AN ADVISORY VOTE ON THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS AS… — FOR was 77% of the votes cast (FOR divided by FOR plus AGAINST, the conventional basis for proxy support; abstentions, broker non-votes and unvoted shares are excluded because none of them took a side), which is more than half. Whether the item was approved is for the filing to say; that statement has not been read for this item. Source: Altimmune, Inc.'s Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission (filing date not recorded for this item).

Altimmune, Inc. proxy season coverage: 2023-2024 · 2024-2025 · 2025-2026 (this page).