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Iron Mountain Incorporated 2025-2026 Proxy Voting Records

Compiled from SEC Form N-PX filings and Iron Mountain Incorporated’s Form 8-K, filed 2026-05-12 (Item 5.07 on EDGAR). Page generated 02 October 2026.

20Reported items
858Asset managers
10,226Fund votes
2026-05-07Meeting date

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

Explore Iron Mountain Incorporated in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by Iron Mountain Incorporated

These tallies are Iron Mountain Incorporated’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed 2026-05-12 (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.

Iron Mountain Incorporated — official shareholder meeting results, meeting held 2026-05-07
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Outcome
Elect Director: Jennifer Allerton	228,147,317	3,714,104	258,469	--	29,485,212	Majority: yes
Elect Director: Pamela M. Arway	224,276,516	7,584,348	259,026	--	29,485,212	Majority: yes
Elect Director: Kent P. Dauten	222,084,314	9,771,888	263,688	--	29,485,212	Majority: yes
Elect Director: June Yee Felix	231,457,579	403,644	258,667	--	29,485,212	Majority: yes
Elect Director: Monte Ford	229,673,232	2,176,206	270,452	--	29,485,212	Majority: yes
Elect Director: Christie Kelly	230,740,183	1,119,691	260,016	--	29,485,212	Majority: yes
Elect Director: Robin L. Matlock	228,348,027	3,510,121	261,742	--	29,485,212	Majority: yes
Elect Director: William L. Meaney	230,355,967	1,518,355	245,568	--	29,485,212	Majority: yes
Elect Director: Walter C. Rakowich	221,243,149	10,628,182	248,559	--	29,485,212	Majority: yes
Elect Director: Theodore R. Samuels	223,196,685	8,663,281	259,924	--	29,485,212	Majority: yes
Elect Director: Doyle R. Simons	230,922,536	935,130	262,224	--	29,485,212	Majority: yes

Source: Iron Mountain Incorporated, Form 8-K, filed with the SEC on 2026-05-12 — read the filing on EDGAR.

How asset managers voted at the Iron Mountain Incorporated 2025-2026 meeting

Each item below shows how the 858 asset managers that disclosed a Iron Mountain Incorporated 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 Iron Mountain Incorporated’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. The approval of a non-binding, advisory resolution approving the compensation of our named executive officers as described in the Iron Mountain Incorporated Proxy Statement.

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2026-05-07.

Combines 10 wordings of this item as funds reported it.

98% fund support · no official result

FOR 98%

The 804 asset managers below cast 98% of the shares they voted on this item FOR (228,262,933 for, 5,069,517 against).

FOR: 228,262,933 (97.7%)AGAINST: 5,069,517 (2.2%)ABSTAIN: 368,084 (0.2%)NOT VOTED: 44,403 (0.0%)UNKNOWN: 1,315 (0.0%)

Largest asset managers voting on “The approval of a non-binding, advisory resolution approving the compensation of our named executive officers ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	46,790,580	51,912	12	For
BlackRock	30,886,296	7,020	0	For
Fidelity	19,615,464	0	0	For
Cohen & Steers	12,839,271	0	0	For
State Street	11,460,784	35,733	0	For
GEODE CAPITAL MANAGEMENT, LLC	8,387,651	0	0	For
Charles Schwab	7,828,169	0	0	For
PRINCIPAL GLOBAL INVESTORS	7,778,321	0	0	For
Invesco	6,924,798	0	0	For
Capital Group	3,736,037	0	0	For
Northern Trust	3,622,621	0	0	For
Prudential/PGIM	3,123,807	0	0	For
Daiwa Securities Group Inc.	2,916,027	0	0	For
Nuveen	2,195,692	0	0	For
Legal & General Investment Management Ltd	28,855	1,913,798	0	Against
Principal	1,898,920	0	0	For
UBS	1,766,457	0	0	For
Russell Investments	1,764,581	0	0	For
TIAA	1,536,449	0	0	For
MELLON INVESTMENTS Corp	1,396,747	0	0	For
T. Rowe Price	1,079,787	247,610	0	For
PARAMETRIC PORTFOLIO ASSOCIATES LLC	1,254,400	0	0	For
Goldman Sachs	1,196,286	0	0	For
Dimensional	1,187,281	0	0	For
Contour Asset Management LLC	1,167,315	0	0	For

Showing the 25 largest of 804 asset managers. See all 804 in the interactive database.

2. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Christie Kelly

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 230,740,183AGAINST: 1,119,691

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Christie Kelly”): 230,740,183 for, 1,119,691 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 78% for, 0.4% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,714,975 for, 1,656 against).

FOR 99.7%

FOR: 106,714,975 (99.7%)AGAINST: 1,656 (0.0%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,910	11	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

3. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Doyle R. Simons

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 230,922,536AGAINST: 935,130

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Doyle R. Simons”): 230,922,536 for, 935,130 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 78% for, 0.4% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,697,110 for, 19,523 against).

FOR 99.7%

FOR: 106,697,110 (99.7%)AGAINST: 19,523 (0.0%)ABSTAIN: 272,346 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,915	8	3	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

4. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Jennifer Allerton

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 228,147,317AGAINST: 3,714,104

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Jennifer Allerton”): 228,147,317 for, 3,714,104 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 77% for, 1% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,680,282 for, 36,351 against).

FOR 99.7%

FOR: 106,680,282 (99.7%)AGAINST: 36,351 (0.0%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,883	40	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

5. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: June Yee Felix

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

99.8% Majority: yes · of votes cast

FOR 99.8%

FOR: 231,457,579AGAINST: 403,644

Iron Mountain Incorporated’s own tally for this item (“Elect Director: June Yee Felix”): 231,457,579 for, 403,644 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 78% for, 0.2% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,716,628 for, 5 against).

FOR 99.7%

FOR: 106,716,628 (99.7%)AGAINST: 5 (0.0%)ABSTAIN: 272,345 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,918	5	2	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

6. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Kent P. Dauten

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

96% Majority: yes · of votes cast

FOR 96%

FOR: 222,084,314AGAINST: 9,771,888

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Kent P. Dauten”): 222,084,314 for, 9,771,888 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 75% for, 3% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,652,715 for, 63,917 against).

FOR 99.6%

FOR: 106,652,715 (99.7%)AGAINST: 63,917 (0.1%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,798	124	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

7. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Monte Ford

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

99.0% Majority: yes · of votes cast

FOR 99.0%

FOR: 229,673,232AGAINST: 2,176,206

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Monte Ford”): 229,673,232 for, 2,176,206 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 77% for, 0.8% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,697,101 for, 19,531 against).

FOR 99.7%

FOR: 106,697,101 (99.7%)AGAINST: 19,531 (0.0%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,906	16	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

8. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Pamela M. Arway

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

97% Majority: yes · of votes cast

FOR 97%

FOR: 224,276,516AGAINST: 7,584,348

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Pamela M. Arway”): 224,276,516 for, 7,584,348 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 75% for, 3% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,619,298 for, 97,333 against).

FOR 99.6%

FOR: 106,619,298 (99.7%)AGAINST: 97,333 (0.1%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,832	89	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

9. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Robin L. Matlock

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 228,348,027AGAINST: 3,510,121

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Robin L. Matlock”): 228,348,027 for, 3,510,121 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 77% for, 1% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,714,940 for, 1,693 against).

FOR 99.7%

FOR: 106,714,940 (99.7%)AGAINST: 1,693 (0.0%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,875	48	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

10. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Theodore R. Samuels

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

96% Majority: yes · of votes cast

FOR 96%

FOR: 223,196,685AGAINST: 8,663,281

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Theodore R. Samuels”): 223,196,685 for, 8,663,281 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 75% for, 3% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.8% of the shares they voted on this item FOR (106,596,208 for, 120,423 against).

FOR 99.6%

FOR: 106,596,208 (99.6%)AGAINST: 120,423 (0.1%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,626,882	31,040	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,102,050	1,701	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,249	262	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

11. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Walter C. Rakowich

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

95% Majority: yes · of votes cast

FOR 95%

FOR: 221,243,149AGAINST: 10,628,182

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Walter C. Rakowich”): 221,243,149 for, 10,628,182 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 74% for, 4% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,662,322 for, 54,311 against).

FOR 99.6%

FOR: 106,662,322 (99.7%)AGAINST: 54,311 (0.1%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,793	130	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

12. For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: William L. Meaney

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-05-07.

Combines 9 wordings of this item as funds reported it.

99.3% Majority: yes · of votes cast

FOR 99.3%

FOR: 230,355,967AGAINST: 1,518,355

Iron Mountain Incorporated’s own tally for this item (“Elect Director: William L. Meaney”): 230,355,967 for, 1,518,355 against, per its Form 8-K filed 2026-05-12 (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 297,478,818 outstanding shares: 77% for, 0.6% against (78% of the company cast a for/against vote).

The 149 asset managers below cast 99.9% of the shares they voted on this item FOR (106,716,532 for, 100 against).

FOR 99.7%

FOR: 106,716,532 (99.7%)AGAINST: 100 (0.0%)ABSTAIN: 272,347 (0.3%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,901	22	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,221	78	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

13. The ratification of the selection by the Audit Committee of Deloitte & Touche LLP as Iron Mountain Incorporated's independent registered public accounting firm for the year ending December 31, 2026.

AUDIT-RELATED

Meeting held 2026-05-07.

Combines 3 wordings of this item as funds reported it.

99.8% fund support · no official result

FOR 99.8%

The 144 asset managers below cast 99.8% of the shares they voted on this item FOR (106,387,165 for, 117,785 against).

FOR: 106,387,165 (99.9%)AGAINST: 117,785 (0.1%)ABSTAIN: 6,808 (0.0%)UNKNOWN: 1,315 (0.0%)NOT VOTED: 224 (0.0%)

Largest asset managers voting on “The ratification of the selection by the Audit Committee of Deloitte & Touche LLP as Iron Mountain Incorporate” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,626,835	31,086	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,102,050	1,701	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Brighthouse	281,249	262	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Goldman Sachs	250,414	0	0	For
Jackson National	241,076	0	0	For

Showing the 25 largest of 144 asset managers. See all 144 in the interactive database.

14. Advisory Vote to Ratify Named Executive Officers' Compensation

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2026-05-07.

75% fund support · no official result

FOR 75%AGAINST 25%

The 29 asset managers below cast 75% of the shares they voted on this item FOR (1,772,099 for, 605,391 against).

FOR: 1,772,099 (74.5%)AGAINST: 605,391 (25.5%)NOT VOTED: 300 (0.0%)

Largest asset managers voting on “Advisory Vote to Ratify Named Executive Officers' Compensation” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Vote
APG Asset Management US Inc.	1,313,980	0	For
NORDEA INVESTMENT MANAGEMENT AB	0	236,001	Against
Union Investment Management GmbH	0	207,286	Against
STOREBRAND ASSET MANAGEMENT AS	124,972	0	For
MIROVA	0	84,838	Against
Lincoln Financial	79,790	0	For
HEITMAN REAL ESTATE SECURITIES LLC	77,739	0	For
Cardano Risk Management B.V.	0	77,146	Against
Empower	47,864	0	For
JPMorgan	40,540	0	For
Osmosis Investment Management UK Ltd	29,652	0	For
B&I Capital AG	17,020	0	For
TD Waterhouse Canada Inc.	10,652	0	For
LDR Capital Management LLC	9,400	0	For
Metzler Asset Management GmbH	6,023	0	For
CLEARWATER INVESTMENT TRUST	4,417	0	For
Wilshire Advisors LLC	2,440	0	For
Coyle Financial Counsel LLC	2,069	0	For
Empirical Financial Services, LLC d.b.a. Empirical Wealth Ma	2,031	0	For
Moment Partners, LLC	1,000	0	For
Advisors' Inner Circle Fund II	731	0	For
Convergence Investment Partners, LLC	635	0	For
Arjuna Capital	575	0	For
Fischer Financial Services, Inc.	500	0	For
55I, LLC	0	0	Not Voted

Showing the 25 largest of 29 asset managers. See all 29 in the interactive database.

15. 14A Executive Compensation

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2026-05-07.

48.8% fund support · no official result

FOR 44%AGAINST 46.6%9%

The 7 asset managers below cast 48.8% of the shares they voted on this item FOR (1,097 for, 1,150 against).

FOR: 1,097 (44.4%)AGAINST: 1,150 (46.6%)ABSTAIN: 221 (9.0%)

Largest asset managers voting on “14A Executive Compensation” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
COURIER CAPITAL LLC	0	1,150	0	Against
Cove Private Wealth, LLC	900	0	0	For
LEAVELL INVESTMENT MANAGEMENT, INC.	0	0	221	Abstain
Moisand Fitzgerald Tamayo, LLC	113	0	0	For
Ballew Advisors, Inc	71	0	0	For
Baker Avenue Asset Management, LP	13	0	0	For
Bramshill Investments, LLC	0	0	0	--

16. Ratify Deloitte & Touche LLP as Auditors

AUDIT-RELATED

Meeting held 2026-05-07.

100% fund support · no official result

FOR 100%

The 3 asset managers below cast 100% of the shares they voted on this item FOR (132,071 for, 0 against).

FOR: 132,071 (100.0%)

Largest asset managers voting on “Ratify Deloitte & Touche LLP as Auditors” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Vote
Lincoln Financial	79,790	For
Empower	47,864	For
CLEARWATER INVESTMENT TRUST	4,417	For

17. Approval, by a non-binding advisory vote, of the compensation of our Named Executive Officers.

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2026-05-07.

— fund support · no official result

ABSTAIN 98%

No shares were cast for or against this item by the managers below — every disclosed position was an abstention or was not voted.

ABSTAIN: 265,539 (97.6%)NOT VOTED: 6,526 (2.4%)

Largest asset managers voting on “Approval, by a non-binding advisory vote, of the compensation of our Named Executive Officers.” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Withheld	Vote
Apollo Diversified Real Estate Fund	0	0	265,539	0	Abstain
National Philanthropic Trust	0	0	0	0	Not Voted

18. Director Elections

DIRECTOR ELECTIONS

Meeting held 2026-05-07.

100% fund support · no official result

FOR 100%

The 2 asset managers below cast 100% of the shares they voted on this item FOR (89 for, 0 against).

FOR: 89 (100.0%)

Largest asset managers voting on “Director Elections” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Withheld	Vote
Ballew Advisors, Inc	71	0	0	0	For
Members Trust Co	18	0	0	0	For

19. To Approve, By An Advisory Vote, The Compensation Of The Company's Named Executives

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2026-05-07.

100% fund support · no official result

FOR 100%

The 2 asset managers below cast 100% of the shares they voted on this item FOR (318 for, 0 against).

FOR: 318 (100.0%)

Largest asset managers voting on “To Approve, By An Advisory Vote, The Compensation Of The Company's Named Executives” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Withheld	Vote
Modern Wealth Management, LLC	159	0	0	0	For
Tandem Financial, LLC	159	0	0	0	For

20. The approval of a non-binding, advisory resolution approving the compensation of our named executive officers as described in the Iron Mountain Incorporated Proxy Statement.

SECTION 14A SAY-ON-PAY VOTES

Meeting held 2025-05-29 (outside the 2025-2026 season's 1 July to 30 June window; reported in this season's filings).

100% fund support · no official result

FOR 100%

The 2 asset managers below cast 100% of the shares they voted on this item FOR (8,580 for, 0 against).

FOR: 8,580 (100.0%)

Largest asset managers voting on “The approval of a non-binding, advisory resolution approving the compensation of our named executive officers ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Withheld	Vote
Investment Management Corp of Ontario	8,291	0	0	0	For
Slow Capital, Inc.	289	0	0	0	For

Largest Iron Mountain Incorporated shareholders voting in 2025-2026

Ranked by the number of Iron Mountain Incorporated shares each manager voted on the most widely held ballot item of the 2025-2026 meeting, shown as a share of the 297,478,818 shares outstanding at the time of that meeting.

Top Iron Mountain Incorporated shareholders by shares voted, 2025-2026
#	Asset manager	% of shares outstanding
1	Vanguard	15.75%
2	BlackRock	10.39%
3	Fidelity	6.59%
4	Cohen & Steers	4.32%
5	State Street	3.86%
6	GEODE CAPITAL MANAGEMENT, LLC	2.82%
7	Charles Schwab	2.63%
8	PRINCIPAL GLOBAL INVESTORS	2.61%
9	Invesco	2.33%
10	Capital Group	1.26%

Reported Iron Mountain Incorporated ownership

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

Iron Mountain Incorporated beneficial owners on record for the 2025-2026 proxy season
Holder	% outstanding	Disclosure
Vanguard Group	15.67%	13F
BlackRock	11.10%	13F
Vanguard Portfolio Management	8.42%	13G
State Street	5.90%	13F
Cohen & Steers, Inc.	4.89%	13G
FMR (Fidelity)	2.52%	13F
Dimensional Fund Advisors	1.53%	13F
Northern Trust	1.40%	13F
Charles Schwab	1.35%	13F
Invesco	1.32%	13F

Percentages above are of 297,478,818 shares outstanding, as reported by Iron Mountain Incorporated 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 Iron Mountain Incorporated’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 Iron Mountain Incorporated's shareholder meeting held 2026-05-07, in the 2025-2026 proxy season, 858 asset managers reported how they voted in their SEC Form N-PX filings, covering 10,226 separate fund positions. Their filings are grouped here into 20 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. Iron Mountain Incorporated's own Form 8-K tally for this meeting is published below, but no row in it could be matched to the most widely held item, so this page states no certified outcome for that item. On that item — The approval of a non-binding, advisory resolution approving the compensation of our named… — the reporting funds cast 98% of the shares they voted in favour (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). That is the aggregate of those managers' own N-PX disclosures, not the company's certified result, and the funds are a subset of all shareholders.

Iron Mountain Incorporated proxy season coverage: 2023-2024 · 2024-2025 · 2025-2026 (this page).