Altair Engineering (ALTR) Form 4 Altair Engineering / Amy Messano ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:	3235-0287
Estimated average burden
hours per response:	0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Messano Amy

(Last) (First) (Middle)

C/O ALTAIR ENGINEERING INC.

1820 E. BIG BEAVER RD.

(Street)

TROY MI 48083

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Altair Engineering Inc. [ ALTR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
Chief Marketing Officer

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2024

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	05/21/2024		M		16,865	A	$0	35,006(1)	D
Class A Common Stock	05/21/2024		M		1,424	A	$0	36,430(1)	D
Class A Common Stock	05/21/2024		M		1,563	A	$0	37,993(1)	D
Class A Common Stock	05/21/2024		S		19,852	D	$90.5088(2)	18,141(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$39.82	05/21/2024		M			16,865	(3)	06/02/2030	Class A Common Stock	16,865	$0	5,635	D
Stock Option (Right to Buy)	$61.93	05/21/2024		M			1,424	(4)	03/15/2031	Class A Common Stock	1,424	$0	1,570	D
Stock Option (Right to Buy)	$30.15(5)	05/21/2024		M			1,563	(6)	03/11/2030	Class A Common Stock	1,563	$0	0	D

Explanation of Responses:

1. Includes 8,236 Class A Common Stock restricted stock units that are unvested.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.08 to $91.07 per share, inclusive. The reporting person undertakes to provide to Altair Engineering Inc., any security holder of Altair Engineering Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.

3. The options vested in 2 equal annual installments commencing June 2, 2022. This option is currently fully vested.

4. The options vest in 4 equal annual installments commencing March 15, 2024.

5. Exercise price was initially reported incorrectly on a Form 4 filed on March 13, 2020. This Form 4 reflects the correct exercise price.

6. The options vested in 4 equal annual installments commencing March 11, 2021. This option is currently fully vested.

	/s/ Raoul Maitra, attorney-in-fact for Amy Messano	05/23/2024
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.