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Tandem Diabetes Care, Inc. 2025-2026 Proxy Voting Records

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

  • 15Reported items
  • 310Asset managers
  • 3,964Fund votes
  • 2026-05-20Meeting date

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

Explore Tandem Diabetes Care, Inc. in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by Tandem Diabetes Care, Inc.

These tallies are Tandem Diabetes Care, 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.

Tandem Diabetes Care, Inc. — official shareholder meeting results, meeting held 2026-05-20
Ballot itemForAgainst AbstainWithheldBroker non-votesOutcome
Elect Director: Rebecca Robertson 54,160,282799,31025,702 --2,979,081 Majority: yes
Elect Director: Sandra Beaver 54,607,191348,05030,053 --2,979,081 Majority: yes
Elect Director: Myoungil Cha 54,456,358502,29026,646 --2,979,081 Majority: yes
Elect Director: Peyton Howell 54,179,597773,22032,477 --2,979,081 Majority: yes
Elect Director: Joao Malagueira 54,454,159499,74731,388 --2,979,081 Majority: yes
Elect Director: Kathleen McGroddy-Goetz 54,312,399641,72631,169 --2,979,081 Majority: yes
Elect Director: John Sheridan 54,432,569536,16416,561 --2,979,081 Majority: yes
Elect Director: Rajwant Sodhi 54,328,131621,29535,868 --2,979,081 Majority: yes
Elect Director: Christopher Twomey 47,921,6557,034,20829,431 --2,979,081 Majority: yes
Proposal 2: To approve, on a non-binding, advisory basis, the compensation of the Company's named executive officers as described in the Proxy Statement 53,460,7471,481,02743,520 --2,979,081 Majority: yes
Proposal 3: To approve the Amended Plan to, among other things, increase the number of shares authorized for issuance under the plan 53,846,6961,108,52930,069 --2,979,081 Majority: yes
Proposal 4: To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to provide for removal of directors with or without cause, as required by Section 141(k) of the DGCL 57,818,029126,02520,321 --0 Majority: yes
Proposal 5: To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to, among other things, (i) limit the liability of officers of the Company to the maximum extent permitted by law as permitted pursuant to Section 102(b)(7) 45,926,4059,043,83115,058 --2,979,081 Majority: yes
Proposal 6: To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026 57,493,084454,73516,556 --0 Majority: yes

Source: Tandem Diabetes Care, Inc., Form 8-K — read the filing on EDGAR.

How asset managers voted at the Tandem Diabetes Care, Inc. 2025-2026 meeting

Each item below shows how the 310 asset managers that disclosed a Tandem Diabetes Care, 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 Tandem Diabetes Care, 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. To approve, on a non-binding, advisory basis, the compensation of our named executive officers.

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

Combines 11 wordings of this item as funds reported it.

97% Majority: yes · of votes cast

FOR 97%
FOR: 53,460,747AGAINST: 1,481,027

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 2: To approve, on a non-binding, advisory basis, the compensation of the Company's named executive officers as described in the Proxy Statement”): 53,460,747 for, 1,481,027 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 68,529,089 outstanding shares: 78% for, 2% against (80% of the company cast a for/against vote).

The 310 asset managers below cast 97% of the shares they voted on this item FOR. Fund share totals are not shown for this item: fund-reported shares overlap across filings (an adviser and the funds it manages can each report the same shares), and here their sum exceeds the total votes cast at the meeting.

FOR 94%
FOR: 93.6%AGAINST: 2.4%ABSTAIN: 0.0%SPLIT: 3.9%NOT VOTED: 0.0%
Largest asset managers voting on “To approve, on a non-binding, advisory basis, the compensation of our named executive officers.” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard9,379,1804 00For
BlackRock9,110,0240 00For
Sessa Capital IM, L.P.5,000,0000 00For
ArrowMark Colorado Holdings LLC2,827,2120 00For
Fidelity2,786,6520 00For
GW&K Investment Management, LLC25,0290 00Split
State Street1,893,0932,083 00For
DRIEHAUS CAPITAL MANAGEMENT LLC1,690,3000 00For
GEODE CAPITAL MANAGEMENT, LLC1,615,3400 00For
Charles Schwab1,197,2160 00For
First Light Asset Management, LLC1,190,5400 00For
JENNISON ASSOCIATES LLC965,1090 00For
JACOBS LEVY EQUITY MANAGEMENT, INC957,1350 00For
MERIDIAN FUND INC907,3310 00For
Voya863,8550 00For
Aberdeen0805,809 00Against
BAILLIE GIFFORD & CO LTD740,5900 00For
Wellington714,8730 00For
DE Shaw699,9090 00For
Royce696,5500 00For
Northern Trust661,9230 00For
Prudential/PGIM642,8720 00For
AMG FUNDS552,2960 00For
MARSHALL WACE, LLP446,0540 00For
Freestone Grove Partners LP443,1050 00For

Showing the 25 largest of 310 asset managers. See all 310 in the interactive database.

2. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Rebecca Robertson

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99% Majority: yes · of votes cast

FOR 99%
FOR: 54,160,282AGAINST: 799,310

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Rebecca Robertson”): 54,160,282 for, 799,310 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 68,529,089 outstanding shares: 79% for, 1% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.7% of the shares they voted on this item FOR (25,035,357 for, 69,427 against).

FOR 99.7%
FOR: 25,035,357 (99.7%)AGAINST: 69,427 (0.3%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Rebecca Rober” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,771,76629,157 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

3. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Sandra Beaver

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99.3% Majority: yes · of votes cast

FOR 99.3%
FOR: 54,607,191AGAINST: 348,050

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Sandra Beaver”): 54,607,191 for, 348,050 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 68,529,089 outstanding shares: 80% for, 0.6% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,075,683 for, 29,100 against).

FOR 99.8%
FOR: 25,075,683 (99.9%)AGAINST: 29,100 (0.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Sandra Beaver” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,790,26310,659 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street769,4490 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

4. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Myoungil Cha

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99.0% Majority: yes · of votes cast

FOR 99.0%
FOR: 54,456,358AGAINST: 502,290

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Myoungil Cha”): 54,456,358 for, 502,290 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 68,529,089 outstanding shares: 79% for, 0.8% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,070,044 for, 34,740 against).

FOR 99.8%
FOR: 25,070,044 (99.9%)AGAINST: 34,740 (0.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Myoungil Cha” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42618,497 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

5. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Peyton Howell

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99% Majority: yes · of votes cast

FOR 99%
FOR: 54,179,597AGAINST: 773,220

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Peyton Howell”): 54,179,597 for, 773,220 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 68,529,089 outstanding shares: 79% for, 1% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,070,039 for, 34,745 against).

FOR 99.8%
FOR: 25,070,039 (99.9%)AGAINST: 34,745 (0.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Peyton Howell” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42118,502 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

6. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Joao Malagueira

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99.0% Majority: yes · of votes cast

FOR 99.0%
FOR: 54,454,159AGAINST: 499,747

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Joao Malagueira”): 54,454,159 for, 499,747 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 68,529,089 outstanding shares: 79% for, 0.8% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,070,044 for, 34,740 against).

FOR 99.8%
FOR: 25,070,044 (99.9%)AGAINST: 34,740 (0.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Joao Malaguei” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42618,497 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

7. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Kathleen McGroddy-Goetz

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 6 wordings of this item as funds reported it.

99% Majority: yes · of votes cast

FOR 99%
FOR: 54,312,399AGAINST: 641,726

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Kathleen McGroddy-Goetz”): 54,312,399 for, 641,726 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 68,529,089 outstanding shares: 79% for, 1.0% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,064,456 for, 40,328 against).

FOR 99.8%
FOR: 25,064,456 (99.8%)AGAINST: 40,328 (0.2%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Kathleen McGr” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42418,499 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

8. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: John Sheridan

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99.0% Majority: yes · of votes cast

FOR 99.0%
FOR: 54,432,569AGAINST: 536,164

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: John Sheridan”): 54,432,569 for, 536,164 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 68,529,089 outstanding shares: 79% for, 0.8% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,070,043 for, 34,740 against).

FOR 99.8%
FOR: 25,070,043 (99.9%)AGAINST: 34,740 (0.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: John Sheridan” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42518,497 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

9. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Rajwant Sodhi

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

99% Majority: yes · of votes cast

FOR 99%
FOR: 54,328,131AGAINST: 621,295

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Rajwant Sodhi”): 54,328,131 for, 621,295 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 68,529,089 outstanding shares: 79% for, 1.0% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,064,456 for, 40,328 against).

FOR 99.8%
FOR: 25,064,456 (99.8%)AGAINST: 40,328 (0.2%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Rajwant Sodhi” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42418,499 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street768,606843 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

10. To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Christopher Twomey

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 4 wordings of this item as funds reported it.

87% Majority: yes · of votes cast

FOR 87%13%
FOR: 47,921,655AGAINST: 7,034,208

Tandem Diabetes Care, Inc.’s own tally for this item (“Elect Director: Christopher Twomey”): 47,921,655 for, 7,034,208 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 68,529,089 outstanding shares: 70% for, 10% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 89% of the shares they voted on this item FOR (22,328,478 for, 2,776,306 against).

FOR 89%11%
FOR: 22,328,478 (88.9%)AGAINST: 2,776,306 (11.1%)
Largest asset managers voting on “To elect nine directors for a one-year term expiring at the 2027 annual meeting of stockholders: Christopher T” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard7,231,7501,569,173 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC0907,331 00Against
State Street768,2831,166 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes099,752 00Against
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II060,070 00Against
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

11. To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to provide for removal of directors with or without cause, as required by Section 141(k) of the Delaware General Corporation Law ("DGCL").

CORPORATE GOVERNANCEMajority of the votes cast: yes

Combines 6 wordings of this item as funds reported it.

99.7% Majority: yes · of votes cast

FOR 99.7%
FOR: 57,818,029AGAINST: 126,025

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 4: To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to provide for removal of directors with or without cause, as required by Section 141(k) of the DGCL”): 57,818,029 for, 126,025 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 68,529,089 outstanding shares: 84% for, 0.2% against (85% of the company cast a for/against vote).

The 73 asset managers below cast 100% of the shares they voted on this item FOR (25,104,784 for, 0 against).

FOR 100%
FOR: 25,104,784 (100.0%)
Largest asset managers voting on “To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to provide for remo” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,800,9230 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street769,4490 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

12. To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to, among other things, (i) limit the liability of officers of the Company to the maximum extent permitted by law as permitted pursuant to Section 102(b)(7) of the DGCL, and (ii) implement certain other changes based on updates to the DGCL.

CORPORATE GOVERNANCEMajority of the votes cast: yes

Combines 3 wordings of this item as funds reported it.

84% Majority: yes · of votes cast

FOR 84%AGAINST 16%
FOR: 45,926,405AGAINST: 9,043,831

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 5: To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to, among other things, (i) limit the liability of officers of the Company to the maximum extent permitted by law as ”): 45,926,405 for, 9,043,831 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 68,529,089 outstanding shares: 67% for, 13% against (80% of the company cast a for/against vote).

The 73 asset managers below cast 85% of the shares they voted on this item FOR (21,458,971 for, 3,645,814 against).

FOR 85%AGAINST 15%
FOR: 21,458,971 (85.5%)AGAINST: 3,645,814 (14.5%)
Largest asset managers voting on “To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to, among other thi” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard7,250,2331,550,690 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC0907,331 00Against
State Street769,126323 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS0552,296 00Against
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan0237,062 00Against
Mercer Funds0178,258 00Against
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs72,59525,029 00For
NORTHERN LIGHTS FUND TRUST II060,070 00Against
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

13. To ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2026.

AUDIT-RELATEDMajority of the votes cast: yes

Combines 3 wordings of this item as funds reported it.

99.2% Majority: yes · of votes cast

FOR 99.2%
FOR: 57,493,084AGAINST: 454,735

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 6: To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026”): 57,493,084 for, 454,735 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 68,529,089 outstanding shares: 84% for, 0.7% against (85% of the company cast a for/against vote).

The 73 asset managers below cast 99.8% of the shares they voted on this item FOR (25,076,131 for, 28,654 against).

FOR 99.8%
FOR: 25,076,131 (99.9%)AGAINST: 28,654 (0.1%)
Largest asset managers voting on “To ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the fi” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,800,9212 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
MERIDIAN FUND INC907,3310 00For
State Street769,40148 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For
Principal59,3430 00For

Showing the 25 largest of 73 asset managers. See all 73 in the interactive database.

14. To approve the Company's 2023 Long-Term Incentive Plan, as amended, to, among other things, increase the number of shares authorized for issuance under the plan.

OTHER SOCIAL ISSUESMajority of the votes cast: yes

98% Majority: yes · of votes cast

FOR 98%
FOR: 53,846,696AGAINST: 1,108,529

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 3: To approve the Amended Plan to, among other things, increase the number of shares authorized for issuance under the plan”): 53,846,696 for, 1,108,529 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 68,529,089 outstanding shares: 79% for, 2% against (80% of the company cast a for/against vote).

The 72 asset managers below cast 99.7% of the shares they voted on this item FOR (26,151,939 for, 68,983 against).

FOR 99.7%
FOR: 26,151,939 (99.7%)AGAINST: 68,983 (0.3%)
Largest asset managers voting on “To approve the Company's 2023 Long-Term Incentive Plan, as amended, to, among other things, increase the numbe” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Vanguard8,782,42118,502 00For
BlackRock6,636,4490 00For
Fidelity2,145,4190 00For
First Light Asset Management, LLC1,190,5400 00For
MERIDIAN FUND INC907,3310 00For
State Street768,558891 00For
Prudential/PGIM630,2680 00For
Charles Schwab557,2040 00For
AMG FUNDS552,2960 00For
Royce358,9960 00For
Voya352,9110 00For
First Trust340,0040 00For
TIAA336,2620 00For
Aberdeen258,7740 00For
DRIEHAUS MUTUAL FUNDS254,5470 00For
JPMorgan237,0620 00For
Mercer Funds178,2580 00For
Equitable142,1500 00For
RBB FUND, INC.122,6780 00For
QUANTITATIVE MASTER SERIES LLC109,6740 00For
Jackson National106,2290 00For
Columbia Threadneedle104,5030 00For
Federated Hermes99,7520 00For
Goldman Sachs97,6240 00For
NORTHERN LIGHTS FUND TRUST II60,0700 00For

Showing the 25 largest of 72 asset managers. See all 72 in the interactive database.

15. Amend Omnibus Stock Plan

COMPENSATIONMajority of the votes cast: yes

98% Majority: yes · of votes cast

FOR 98%
FOR: 53,846,696AGAINST: 1,108,529

Tandem Diabetes Care, Inc.’s own tally for this item (“Proposal 3: To approve the Amended Plan to, among other things, increase the number of shares authorized for issuance under the plan”): 53,846,696 for, 1,108,529 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 68,529,089 outstanding shares: 79% for, 2% against (80% of the company cast a for/against vote).

The 3 asset managers below cast 100% of the shares they voted on this item FOR (78,599 for, 0 against).

FOR 100%
FOR: 78,599 (100.0%)
Largest asset managers voting on “Amend Omnibus Stock Plan” at Tandem Diabetes Care, Inc., 2025-2026
Asset managerForAgainst AbstainWithheldVote
Empower47,4680 00For
CLEARWATER INVESTMENT TRUST25,7960 00For
FORUM FUNDS5,3350 00For

Largest Tandem Diabetes Care, Inc. shareholders voting in 2025-2026

Ranked by the number of Tandem Diabetes Care, Inc. shares each manager voted on the most widely held ballot item of the 2025-2026 meeting, shown as a share of the 68,529,089 shares outstanding at the time of that meeting.

Top Tandem Diabetes Care, Inc. shareholders by shares voted, 2025-2026
#Asset manager % of shares outstanding
1Vanguard 13.69%
2BlackRock 13.29%
3Sessa Capital IM, L.P. 7.30%
4ArrowMark Colorado Holdings LLC 4.13%
5Fidelity 4.07%
6GW&K Investment Management, LLC 3.44%
7State Street 2.77%
8DRIEHAUS CAPITAL MANAGEMENT LLC 2.47%
9GEODE CAPITAL MANAGEMENT, LLC 2.36%
10Charles Schwab 1.75%

Reported Tandem Diabetes Care, Inc. ownership

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

Tandem Diabetes Care, Inc. beneficial owners on record for the 2025-2026 proxy season
Holder % outstanding Disclosure
BlackRock 15.60% 13F
The Vanguard Group 10.25% DEF14A
Sessa Capital 6.52% DEF14A
Vanguard Portfolio Management 5.91% 13G
ArrowMark Colorado Holdings, LLC 4.22% 13G
State Street 3.88% 13F
Citadel Advisors 3.32% 13F
Goldman Sachs 3.24% 13F
Morgan Stanley 3.04% 13F
Two Sigma 2.72% 13F

Percentages above are of 68,529,089 shares outstanding, as reported by Tandem Diabetes Care, Inc. on its Form 10-Q dated 2026-05-04 (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 Tandem Diabetes Care, Inc.’s 10-Q dated 2026-05-04. This page is a static snapshot rebuilt weekly on 02 October 2026; a live search always shows the current data.

At Tandem Diabetes Care, Inc.'s shareholder meeting held 2026-05-20, in the 2025-2026 proxy season, 310 asset managers reported how they voted in their SEC Form N-PX filings, covering 3,964 separate fund positions. Their filings are grouped here into 15 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 on that ballot — To approve, on a non-binding, advisory basis, the compensation of our named executive officers. — FOR was 97% 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: Tandem Diabetes Care, Inc.'s Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission (filing date not recorded for this item).

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