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ALTAIR ENGINEERING INC. 2024-2025 Proxy Voting Records

Compiled from SEC Form N-PX filings and ALTAIR ENGINEERING INC.’s Form 8-K, filed 2025-01-22 (Item 5.07 on EDGAR). Page generated 02 October 2026.

5Reported items
342Asset managers
1,287Fund votes
2025-01-22Meeting date

Proxy season: 2023-2024 2024-2025

Explore ALTAIR ENGINEERING INC. in the interactive database Compare manager voting policies

Official 2024-2025 meeting results reported by ALTAIR ENGINEERING INC.

These tallies are ALTAIR ENGINEERING INC.’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed 2025-01-22 (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.

ALTAIR ENGINEERING INC. — official shareholder meeting results, meeting held 2025-01-22
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Outcome
Proposal 1: The Merger Agreement Proposal	307,156,609	10,862	21,052	--	--	Majority: yes
Proposal 2: The Merger-Related Compensation Proposal	305,518,588	1,530,771	139,164	--	--	Majority: yes

Source: ALTAIR ENGINEERING INC., Form 8-K, filed with the SEC on 2025-01-22 — read the filing on EDGAR.

How asset managers voted at the ALTAIR ENGINEERING INC. 2024-2025 meeting

Each item below shows how the 342 asset managers that disclosed a ALTAIR ENGINEERING 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 ALTAIR ENGINEERING 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 (non-binding) basis the compensation that may be paid or become payable to Altair's named executive officers that is based on or otherwise relates to the merger, and

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

Combines 10 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 305,518,588AGAINST: 1,530,771

ALTAIR ENGINEERING INC.’s own tally for this item (“Proposal 2: The Merger-Related Compensation Proposal”): 305,518,588 for, 1,530,771 against, per its Form 8-K filed 2025-01-22 (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. Share-of-outstanding not shown: votes cast exceed the reported share count, which usually means multiple share classes with different voting rights.

The 328 asset managers below cast 95% of the shares they voted on this item FOR (49,381,871 for, 2,483,710 against).

FOR 95%

FOR: 49,381,871 (95.0%)AGAINST: 2,483,710 (4.8%)ABSTAIN: 95,825 (0.2%)NOT VOTED: 5,075 (0.0%)

Largest asset managers voting on “To approve on an advisory (non-binding) basis the compensation that may be paid or become payable to Altair's ” at ALTAIR ENGINEERING INC., 2024-2025
Asset manager	For	Against	Vote
Matrix Capital Management Company, LP	12,427,813	0	For
BlackRock	7,228,994	0	For
Vanguard	6,709,082	0	For
State Street	2,402,310	0	For
AllianceBernstein	1,422,591	0	For
CONESTOGA FUNDS	1,406,295	0	For
Fidelity	1,402,621	0	For
GEODE CAPITAL MANAGEMENT, LLC	1,312,266	0	For
IMPAX ASSET MANAGEMENT LLC	1,069,045	0	For
Charles Schwab	1,031,024	0	For
BAMCO INC /NY/	0	935,000	Against
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	0	935,000	Against
UBS	868,419	0	For
Northern Trust	721,941	0	For
Candriam S.C.A.	669,128	0	For
Putnam	625,590	0	For
Conestoga Capital Advisors, LLC	575,055	34,955	For
Aberdeen	566,936	0	For
Dimensional	480,231	0	For
MELLON INVESTMENTS Corp	382,667	0	For
Woodline Partners LP	340,672	0	For
Magnetar Financial LLC	298,667	0	For
PRIMECAP MANAGEMENT CO/CA/	247,123	0	For
Equitable	239,796	0	For
Man Group plc	230,060	0	For

Showing the 25 largest of 328 asset managers. See all 328 in the interactive database.

2. To adopt the Agreement and Plan of Merger, dated as of October 30, 2024 (such agreement, as it may be amended from time to time, the "merger agreement"), among Altair Engineering Inc. ("Altair"), Siemens Industry Software Inc., a Delaware corporation ("Siemens"), and Astra Merger Sub Inc., a Delaware corporation and a wholly owned subsidiary of Siemens ("Merger Sub"), pursuant to which, upon the t

EXTRAORDINARY TRANSACTIONSMajority of the votes cast: yes

Combines 6 wordings of this item as funds reported it.

99.9% Majority: yes · of votes cast

FOR 99.9%

FOR: 307,156,609AGAINST: 10,862

ALTAIR ENGINEERING INC.’s own tally for this item (“Proposal 1: The Merger Agreement Proposal”): 307,156,609 for, 10,862 against, per its Form 8-K filed 2025-01-22 (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. Share-of-outstanding not shown: votes cast exceed the reported share count, which usually means multiple share classes with different voting rights.

The 110 asset managers below cast 100% of the shares they voted on this item FOR (20,235,346 for, 0 against).

FOR 100%

FOR: 20,235,346 (100.0%)

Largest asset managers voting on “To adopt the Agreement and Plan of Merger, dated as of October 30, 2024 (such agreement, as it may be amended ” at ALTAIR ENGINEERING INC., 2024-2025
Asset manager	For	Vote
Vanguard	6,482,818	For
BlackRock	4,830,822	For
CONESTOGA FUNDS	1,406,295	For
Fidelity	1,300,224	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	935,000	For
Charles Schwab	510,634	For
AllianceBernstein	438,035	For
State Street	418,976	For
Dimensional	367,311	For
Putnam	301,014	For
Equitable	239,796	For
NEEDHAM FUNDS INC	225,000	For
Columbia Threadneedle	200,054	For
PRIMECAP Odyssey Funds	165,283	For
Jackson National	150,373	For
TIAA	143,829	For
Principal	123,233	For
MFS	121,432	For
QUANTITATIVE MASTER SERIES LLC	98,649	For
ARBITRAGE FUNDS	97,532	For
AIG/SunAmerica	96,391	For
John Hancock	95,458	For
NICHOLAS Ltd EDITION, INC.	84,870	For
Northern Trust	83,280	For
HOMESTEAD FUNDS INC	66,877	For

Showing the 25 largest of 110 asset managers. See all 110 in the interactive database.

3. TO APPROVE THE ADJOURNMENT OF THE SPECIAL MEETING, IF NECESSARY, TO SOLICIT ADDITIONAL PROXIES IF THERE ARE NOT SUFFICIENT VOTES TO APPROVE THE MERGER AGREEMENT PROPOSAL.

CORPORATE GOVERNANCE

Combines 2 wordings of this item as funds reported it.

92% fund support · no official result

FOR 92%8%

The 106 asset managers below cast 92% of the shares they voted on this item FOR (18,541,784 for, 1,641,657 against).

FOR: 18,541,784 (91.8%)AGAINST: 1,641,657 (8.1%)ABSTAIN: 16,911 (0.1%)

Largest asset managers voting on “TO APPROVE THE ADJOURNMENT OF THE SPECIAL MEETING, IF NECESSARY, TO SOLICIT ADDITIONAL PROXIES IF THERE ARE NO” at ALTAIR ENGINEERING INC., 2024-2025
Asset manager	For	Against	Vote
Vanguard	6,482,818	0	For
BlackRock	4,830,822	0	For
CONESTOGA FUNDS	1,406,295	0	For
Fidelity	151,977	1,148,247	Against
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	935,000	0	For
Charles Schwab	510,634	0	For
AllianceBernstein	438,035	0	For
State Street	503	418,473	Against
Dimensional	367,311	0	For
Putnam	301,014	0	For
Equitable	239,796	0	For
NEEDHAM FUNDS INC	225,000	0	For
Columbia Threadneedle	200,054	0	For
PRIMECAP Odyssey Funds	165,283	0	For
Jackson National	150,373	0	For
TIAA	143,829	0	For
Principal	123,233	0	For
MFS	121,432	0	For
QUANTITATIVE MASTER SERIES LLC	98,649	0	For
ARBITRAGE FUNDS	97,532	0	For
AIG/SunAmerica	96,391	0	For
John Hancock	95,458	0	For
NICHOLAS Ltd EDITION, INC.	84,870	0	For
Northern Trust	83,280	0	For
HOMESTEAD FUNDS INC	66,877	0	For

Showing the 25 largest of 106 asset managers. See all 106 in the interactive database.

4. Advisory Vote on Golden Parachutes

SECTION 14A SAY-ON-PAY VOTES

Combines 2 wordings of this item as funds reported it.

100% fund support · no official result

FOR 100%

The 6 asset managers below cast 100% of the shares they voted on this item FOR (517,037 for, 0 against).

FOR: 517,037 (100.0%)

Largest asset managers voting on “Advisory Vote on Golden Parachutes” at ALTAIR ENGINEERING INC., 2024-2025
Asset manager	For	Vote
Thematics Asset Management	343,506	For
ADAGE CAPITAL PARTNERS GP, L.L.C.	139,844	For
Empower	32,546	For
HC CAPITAL TRUST	829	For
ESSEX INVESTMENT MANAGEMENT CO LLC	312	For
Taconic Capital Advisors LP	0	--

5. Adjourn Meeting

SHAREHOLDER RIGHTS AND DEFENSES

100% fund support · no official result

FOR 100%

The 2 asset managers below cast 100% of the shares they voted on this item FOR (33,375 for, 0 against).

FOR: 33,375 (100.0%)

Largest asset managers voting on “Adjourn Meeting” at ALTAIR ENGINEERING INC., 2024-2025
Asset manager	For	Against	Abstain	Withheld	Vote
Empower	32,546	0	0	0	For
HC CAPITAL TRUST	829	0	0	0	For

Largest ALTAIR ENGINEERING INC. shareholders voting in 2024-2025

Ranked by the number of ALTAIR ENGINEERING INC. shares each manager voted on the most widely held ballot item of the 2024-2025 meeting, shown as a share of the 84,085,000 shares outstanding at the time of that meeting.

Top ALTAIR ENGINEERING INC. shareholders by shares voted, 2024-2025
#	Asset manager	% of shares outstanding
1	Matrix Capital Management Company, LP	14.78%
2	BlackRock	8.60%
3	Vanguard	7.98%
4	State Street	2.86%
5	AllianceBernstein	1.69%
6	CONESTOGA FUNDS	1.67%
7	Fidelity	1.67%
8	GEODE CAPITAL MANAGEMENT, LLC	1.56%
9	IMPAX ASSET MANAGEMENT LLC	1.27%
10	Charles Schwab	1.23%

Reported ALTAIR ENGINEERING INC. ownership

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

ALTAIR ENGINEERING INC. beneficial owners on record for the 2024-2025 proxy season
Holder	% outstanding	Disclosure
Matrix Capital Management Company LP	14.55%	DEF14A
BlackRock, Inc.	8.89%	13G
The Vanguard Group, Inc.	6.85%	DEF14A
Pictet Asset Management S.A.	3.45%	DEF14A
George J. Christ	1.16%	DEF14A
James R. Scapa	0.26%	DEF14A
Nuveen	0.20%	13F
Mahalingam Srikanth	0.16%	DEF14A
Norges Bank	0.11%	13F
Stephanie Buckner	0.10%	DEF14A

Percentages above are of 84,085,000 shares outstanding, as reported by ALTAIR ENGINEERING INC. on its Form 10-K dated 2024-12-31 (see the filing on EDGAR). This is the count contemporaneous with the 2024-2025 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 ALTAIR ENGINEERING INC.’s 10-K dated 2024-12-31. This page is a static snapshot rebuilt weekly on 02 October 2026; a live search always shows the current data.

At ALTAIR ENGINEERING INC.'s shareholder meeting held 2025-01-22, in the 2024-2025 proxy season, 342 asset managers reported how they voted in their SEC Form N-PX filings, covering 1,287 separate fund positions. Their filings are grouped here into 5 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 an advisory (non-binding) basis the compensation that may be paid or become… — FOR was 99.5% 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: ALTAIR ENGINEERING INC.'s Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission on 2025-01-22.

ALTAIR ENGINEERING INC. proxy season coverage: 2023-2024 · 2024-2025 (this page).