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AMPHASTAR PHARMACEUTICALS INC. 2023-2024 Proxy Voting Records

Compiled from SEC Form N-PX filings and AMPHASTAR PHARMACEUTICALS INC.’s Form 8-K, filed 2024-06-04 (Item 5.07 on EDGAR). Page generated 02 October 2026.

  • 10Reported items
  • 301Asset managers
  • 2,415Fund votes
  • 2024-06-03Meeting date

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

Explore AMPHASTAR PHARMACEUTICALS INC. in the interactive database Compare manager voting policies

Official 2023-2024 meeting results reported by AMPHASTAR PHARMACEUTICALS INC.

These tallies are AMPHASTAR PHARMACEUTICALS INC.’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed 2024-06-04 (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.

AMPHASTAR PHARMACEUTICALS INC. — official shareholder meeting results, meeting held 2024-06-03
Ballot itemForAgainst AbstainWithheldBroker non-votesOutcome
Elect Director: Mary Ziping Luo 36,539,3613,238,76216,103 --4,897,137 Majority: yes
Elect Director: Howard Lee 30,735,0849,041,57317,569 --4,897,137 Majority: yes
Elect Director: Michael A. Zasloff 28,934,72110,836,43123,074 --4,897,137 Majority: yes
Elect Director: Gayle Deflin 37,568,6362,204,67920,911 --4,897,137 Majority: yes
Approval of the amendment to the 2015 Equity Incentive Plan 28,069,40111,693,21331,612 --4,897,137 Majority: yes

Source: AMPHASTAR PHARMACEUTICALS INC., Form 8-K, filed with the SEC on 2024-06-04 — read the filing on EDGAR.

How asset managers voted at the AMPHASTAR PHARMACEUTICALS INC. 2023-2024 meeting

Each item below shows how the 301 asset managers that disclosed a AMPHASTAR PHARMACEUTICALS 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 AMPHASTAR PHARMACEUTICALS 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 an advisory basis, the compensation of the Company's named executive officers; and

SECTION 14A SAY-ON-PAY VOTES

Combines 6 wordings of this item as funds reported it.

94% fund support · no official result

FOR 94%

The 287 asset managers below cast 94% of the shares they voted on this item FOR (31,743,231 for, 1,903,885 against).

FOR: 31,743,231 (94.3%)AGAINST: 1,903,885 (5.7%)ABSTAIN: 4,994 (0.0%)NOT VOTED: 58 (0.0%)
Largest asset managers voting on “To approve, on an advisory basis, the compensation of the Company's named executive officers; and” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock4,707,90221,651 00For
Federated Hermes4,092,7890 00For
Neuberger Berman2,766,3290 00For
Vanguard2,731,7660 00For
State Street2,003,37816,909 00For
American Century01,273,393 00Against
FULLER & THALER ASSET MANAGEMENT, INC.1,257,9390 00For
T. Rowe Price962,7530 00For
Dimensional934,7910 00For
Fidelity820,8820 00For
GEODE CAPITAL MANAGEMENT, LLC757,6660 00For
Charles Schwab701,4420 00For
BOONE CAPITAL MANAGEMENT LLC575,5470 00For
Epoch Investment Partners, Inc.573,2630 00For
Invesco559,8790 00For
Northern Trust487,6301,730 00For
Victory Capital395,8615,864 00For
OBERWEIS ASSET MANAGEMENT INC/398,3000 00For
OBERWEIS FUNDS394,6000 00For
BESSEMER INVESTMENT MANAGEMENT LLC283,1350 00For
OLD WESTBURY FUNDS INC283,1350 00For
Point72270,2920 00For
PRINCIPAL GLOBAL INVESTORS218,6640 00For
MELLON INVESTMENTS Corp204,1980 00For
Nuveen188,6610 00For

Showing the 25 largest of 287 asset managers. See all 287 in the interactive database.

2. To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until each such director's successor is elected and qualified or until such director's earlier death, resignation or removal: Gayle Deflin

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 5 wordings of this item as funds reported it.

94% Majority: yes · of votes cast

FOR 94%
FOR: 37,568,636AGAINST: 2,204,679

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Elect Director: Gayle Deflin”): 37,568,636 for, 2,204,679 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 77% for, 5% against (81% of the company cast a for/against vote).

The 93 asset managers below cast 92% of the shares they voted on this item FOR (16,015,958 for, 1,348,166 against).

FOR 92%8%
FOR: 16,015,958 (92.2%)AGAINST: 1,348,166 (7.8%)ABSTAIN: 4,323 (0.0%)
Largest asset managers voting on “To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until ea” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Capitol Series Trust1,200,1920 00For
Neuberger Berman1,108,3100 00For
Dimensional0830,819 00Against
Fidelity794,1050 00For
State Street634,4301,578 00For
American Century634,4190 00For
T. Rowe Price0439,674 00Against
OBERWEIS FUNDS394,6000 00For
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC283,1350 00For
Invesco268,0410 00For
Victory Capital190,6150 00For
TIAA187,1110 00For
Janus Detroit Street Trust134,1390 00For
Brighthouse114,7842,376 4,3230For
Equitable104,0010 00For
Columbia Threadneedle101,3390 00For
MoA Funds Corp96,3320 00For
Jackson National80,61413,624 00For
World Funds Trust74,5620 00For
SEI74,3120 00For
BNY Mellon71,1290 00For

Showing the 25 largest of 93 asset managers. See all 93 in the interactive database.

3. To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until each such director's successor is elected and qualified or until such director's earlier death, resignation or removal: Howard Lee

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 5 wordings of this item as funds reported it.

77% Majority: yes · of votes cast

FOR 77%AGAINST 23%
FOR: 30,735,084AGAINST: 9,041,573

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Elect Director: Howard Lee”): 30,735,084 for, 9,041,573 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 63% for, 19% against (81% of the company cast a for/against vote).

The 93 asset managers below cast 70% of the shares they voted on this item FOR (12,077,606 for, 5,286,518 against).

FOR 70%AGAINST 30%
FOR: 12,077,606 (69.5%)AGAINST: 5,286,518 (30.4%)ABSTAIN: 4,323 (0.0%)
Largest asset managers voting on “To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until ea” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Capitol Series Trust01,200,192 00Against
Neuberger Berman1,108,3100 00For
Dimensional0830,819 00Against
Fidelity752,00342,102 00For
State Street628,6257,383 00For
American Century0634,419 00Against
T. Rowe Price0439,674 00Against
OBERWEIS FUNDS0394,600 00Against
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC0283,135 00Against
Invesco268,0410 00For
Victory Capital0190,615 00Against
TIAA0187,111 00Against
Janus Detroit Street Trust0134,139 00Against
Brighthouse101,04816,112 4,3230For
Equitable104,0010 00For
Columbia Threadneedle0101,339 00Against
MoA Funds Corp096,332 00Against
Jackson National094,238 00Against
World Funds Trust74,5620 00For
SEI74,3120 00For
BNY Mellon071,129 00Against

Showing the 25 largest of 93 asset managers. See all 93 in the interactive database.

4. To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until each such director's successor is elected and qualified or until such director's earlier death, resignation or removal: Mary Ziping Luo

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 5 wordings of this item as funds reported it.

92% Majority: yes · of votes cast

FOR 92%8%
FOR: 36,539,361AGAINST: 3,238,762

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Elect Director: Mary Ziping Luo”): 36,539,361 for, 3,238,762 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 75% for, 7% against (81% of the company cast a for/against vote).

The 93 asset managers below cast 91% of the shares they voted on this item FOR (15,779,001 for, 1,585,123 against).

FOR 91%9%
FOR: 15,779,001 (90.8%)AGAINST: 1,585,123 (9.1%)ABSTAIN: 4,323 (0.0%)
Largest asset managers voting on “To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until ea” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Capitol Series Trust1,200,1920 00For
Neuberger Berman1,108,3100 00For
Dimensional0830,819 00Against
Fidelity794,1050 00For
State Street9,822626,186 00Against
American Century634,4190 00For
T. Rowe Price439,6740 00For
OBERWEIS FUNDS394,6000 00For
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC283,1350 00For
Invesco268,0410 00For
Victory Capital190,6150 00For
TIAA187,1110 00For
Janus Detroit Street Trust134,1390 00For
Brighthouse117,1600 4,3230For
Equitable104,0010 00For
Columbia Threadneedle101,3390 00For
MoA Funds Corp96,3320 00For
Jackson National80,61413,624 00For
World Funds Trust74,5620 00For
SEI74,3120 00For
BNY Mellon71,1290 00For

Showing the 25 largest of 93 asset managers. See all 93 in the interactive database.

5. To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until each such director's successor is elected and qualified or until such director's earlier death, resignation or removal: Michael A. Zasloff

DIRECTOR ELECTIONSMajority of the votes cast: yes

Combines 5 wordings of this item as funds reported it.

73% Majority: yes · of votes cast

FOR 73%AGAINST 27%
FOR: 28,934,721AGAINST: 10,836,431

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Elect Director: Michael A. Zasloff”): 28,934,721 for, 10,836,431 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 59% for, 22% against (81% of the company cast a for/against vote).

The 93 asset managers below cast 64% of the shares they voted on this item FOR (11,105,723 for, 6,258,401 against).

FOR 64%AGAINST 36%
FOR: 11,105,723 (63.9%)AGAINST: 6,258,401 (36.0%)ABSTAIN: 4,323 (0.0%)
Largest asset managers voting on “To elect four Class II directors to serve until the Company's 2027 Annual Meeting of Stockholders and until ea” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Capitol Series Trust01,200,192 00Against
Neuberger Berman1,108,3100 00For
Dimensional0830,819 00Against
Fidelity752,00342,102 00For
State Street4,017631,991 00Against
American Century0634,419 00Against
T. Rowe Price0439,674 00Against
OBERWEIS FUNDS0394,600 00Against
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC0283,135 00Against
Invesco0268,041 00Against
Victory Capital0190,615 00Against
TIAA0187,111 00Against
Janus Detroit Street Trust0134,139 00Against
Brighthouse101,04816,112 4,3230For
Equitable57,90146,100 00For
Columbia Threadneedle0101,339 00Against
MoA Funds Corp096,332 00Against
Jackson National094,238 00Against
World Funds Trust74,5620 00For
SEI74,3120 00For
BNY Mellon071,129 00Against

Showing the 25 largest of 93 asset managers. See all 93 in the interactive database.

6. To approve the amendment and restatement of our 2015 Equity Incentive Plan.

COMPENSATIONMajority of the votes cast: yes

Combines 2 wordings of this item as funds reported it.

71% Majority: yes · of votes cast

FOR 71%AGAINST 29%
FOR: 28,069,401AGAINST: 11,693,213

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Approval of the amendment to the 2015 Equity Incentive Plan”): 28,069,401 for, 11,693,213 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 57% for, 24% against (81% of the company cast a for/against vote).

The 91 asset managers below cast 69% of the shares they voted on this item FOR (11,189,376 for, 4,943,221 against).

FOR 69%AGAINST 31%
FOR: 11,189,376 (69.3%)AGAINST: 4,943,221 (30.6%)ABSTAIN: 6,769 (0.0%)
Largest asset managers voting on “To approve the amendment and restatement of our 2015 Equity Incentive Plan.” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Neuberger Berman1,108,3100 00For
Dimensional0830,819 00Against
Fidelity727,61466,491 00For
State Street4,017631,991 00Against
American Century0634,419 00Against
T. Rowe Price0439,674 00Against
OBERWEIS FUNDS0394,600 00Against
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC0283,135 00Against
Invesco0268,041 00Against
Victory Capital0190,615 00Against
TIAA187,1110 00For
Janus Detroit Street Trust0134,139 00Against
Brighthouse101,04816,112 4,3230For
Equitable57,90146,100 00For
Columbia Threadneedle0101,339 00Against
MoA Funds Corp096,332 00Against
Jackson National094,238 00Against
World Funds Trust074,562 00Against
SEI74,3120 00For
BNY Mellon071,129 00Against
QUANTITATIVE MASTER SERIES LLC70,4020 00For

Showing the 25 largest of 91 asset managers. See all 91 in the interactive database.

7. To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for its fiscal year ending December 31, 2024;

AUDIT-RELATED

Combines 4 wordings of this item as funds reported it.

99.9% fund support · no official result

FOR 99.9%

The 89 asset managers below cast 99.9% of the shares they voted on this item FOR (16,134,477 for, 516 against).

FOR: 16,134,477 (100.0%)AGAINST: 516 (0.0%)ABSTAIN: 4,323 (0.0%)
Largest asset managers voting on “To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm ” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
BlackRock3,590,7220 00For
Vanguard2,618,0700 00For
Federated Hermes2,046,3940 00For
Neuberger Berman1,108,3100 00For
Dimensional830,8190 00For
Fidelity794,1050 00For
State Street635,492516 00For
American Century634,4190 00For
T. Rowe Price439,6740 00For
OBERWEIS FUNDS394,6000 00For
Charles Schwab342,8040 00For
OLD WESTBURY FUNDS INC283,1350 00For
Invesco268,0410 00For
Victory Capital190,6150 00For
TIAA187,1110 00For
Janus Detroit Street Trust134,1390 00For
Brighthouse117,1600 4,3230For
Equitable104,0010 00For
Columbia Threadneedle101,3390 00For
MoA Funds Corp96,3320 00For
Jackson National94,2380 00For
World Funds Trust74,5620 00For
SEI74,3120 00For
BNY Mellon71,1290 00For
QUANTITATIVE MASTER SERIES LLC70,4020 00For

Showing the 25 largest of 89 asset managers. See all 89 in the interactive database.

8. Advisory Vote to Ratify Named Executive Officers' Compensation

SECTION 14A SAY-ON-PAY VOTES

78% fund support · no official result

FOR 78%AGAINST 22%

The 9 asset managers below cast 78% of the shares they voted on this item FOR (1,250,997 for, 362,116 against).

FOR: 1,250,997 (77.6%)AGAINST: 362,116 (22.4%)
Largest asset managers voting on “Advisory Vote to Ratify Named Executive Officers' Compensation” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
Capitol Series Trust1,200,1920 00For
NORDEA INVESTMENT MANAGEMENT AB0333,014 00Against
JPMorgan36,6740 00For
Empower028,782 00Against
ADVISORY RESEARCH INC13,3290 00For
Triasima Portfolio Management inc.6950 00For
Desjardins Global Asset Management Inc.0320 00Against
CORNELL UNIVERSITY1070 00For
Trivant Custom Portfolio Group, LLC00 00--

9. Amend Omnibus Stock Plan

COMPENSATIONMajority of the votes cast: yes

71% Majority: yes · of votes cast

FOR 71%AGAINST 29%
FOR: 28,069,401AGAINST: 11,693,213

AMPHASTAR PHARMACEUTICALS INC.’s own tally for this item (“Approval of the amendment to the 2015 Equity Incentive Plan”): 28,069,401 for, 11,693,213 against, per its Form 8-K filed 2024-06-04 (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 48,841,343 outstanding shares: 57% for, 24% against (81% of the company cast a for/against vote).

The 3 asset managers below cast 0% of the shares they voted on this item FOR (0 for, 1,229,081 against).

AGAINST 100%
AGAINST: 1,229,081 (100.0%)
Largest asset managers voting on “Amend Omnibus Stock Plan” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
Capitol Series Trust01,200,192 00Against
Empower028,782 00Against
CORNELL UNIVERSITY0107 00Against

10. Ratify Ernst & Young LLP as Auditors

AUDIT-RELATED

100% fund support · no official result

FOR 100%

The 3 asset managers below cast 100% of the shares they voted on this item FOR (1,229,081 for, 0 against).

FOR: 1,229,081 (100.0%)
Largest asset managers voting on “Ratify Ernst & Young LLP as Auditors” at AMPHASTAR PHARMACEUTICALS INC., 2023-2024
Asset managerForAgainst AbstainWithheldVote
Capitol Series Trust1,200,1920 00For
Empower28,7820 00For
CORNELL UNIVERSITY1070 00For

Largest AMPHASTAR PHARMACEUTICALS INC. shareholders voting in 2023-2024

Ranked by the number of AMPHASTAR PHARMACEUTICALS INC. shares each manager voted on the most widely held ballot item of the 2023-2024 meeting, shown as a share of the 48,841,343 shares outstanding at the time of that meeting.

Top AMPHASTAR PHARMACEUTICALS INC. shareholders by shares voted, 2023-2024
#Asset manager % of shares outstanding
1BlackRock 9.68%
2Federated Hermes 8.38%
3Neuberger Berman 5.66%
4Vanguard 5.59%
5State Street 4.14%
6American Century 2.61%
7FULLER & THALER ASSET MANAGEMENT, INC. 2.58%
8T. Rowe Price 1.97%
9Dimensional 1.91%
10Fidelity 1.68%

Reported AMPHASTAR PHARMACEUTICALS INC. ownership

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

AMPHASTAR PHARMACEUTICALS INC. beneficial owners on record for the 2023-2024 proxy season
Holder % outstanding Disclosure
Jack Yongfeng Zhang 27.51% 13G
Jack Y. Zhang 26.15% DEF14A
Mary Z. Luo 26.15% DEF14A
Applied Physics & Chemistry Laboratories, Inc. 13.98% DEF14A
BlackRock 11.23% 13F
Vanguard Group 5.39% 13F
State Street 3.10% 13F
Dimensional Fund Advisors 2.42% 13F
Geode Capital 1.77% 13F
Renaissance Technologies 1.23% 13F

Percentages above are of 48,841,343 shares outstanding, as reported by AMPHASTAR PHARMACEUTICALS INC. on its Form 10-Q dated 2024-03-31 (see the filing on EDGAR). This is the count contemporaneous with the 2023-2024 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 AMPHASTAR PHARMACEUTICALS INC.’s 10-Q dated 2024-03-31. This page is a static snapshot rebuilt weekly on 02 October 2026; a live search always shows the current data.

At AMPHASTAR PHARMACEUTICALS INC.'s shareholder meeting held 2024-06-03, in the 2023-2024 proxy season, 301 asset managers reported how they voted in their SEC Form N-PX filings, covering 2,415 separate fund positions. Their filings are grouped here into 10 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. AMPHASTAR PHARMACEUTICALS INC.'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 — To approve, on an advisory basis, the compensation of the Company's named executive officers… — the reporting funds cast 94% 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.

AMPHASTAR PHARMACEUTICALS INC. proxy season coverage: 2023-2024 (this page) · 2024-2025 · 2025-2026.