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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1701732	Altair Engineering Inc.	ALTR	Services-Prepackaged Software (7372)	382591828

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1720808	Gc Investments Llc	C/O Altair Engineering Inc. 1820 E. Big Beaver Road Troy MI 48083		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Class A Common Stock	Acquisiton	2017-11-03	800,000	$0.00	800,000	No	4	C	Direct
Class A Common Stock	Disposition	2017-11-03	800,000	$12.09	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Class A Common Stock	Class B Common Stock	Disposition	2017-11-03	800,000	$0.00	800,000	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
5,624,004			No	4	C	Direct

Footnotes

These shares were sold by the reporting person as a selling stockholder pursuant to an underwritten public offering by the Issuer. The offering closed on November 3, 2017. The reported sale price reflects the price at which the reporting person sold shares to the underwriters.
Each share of Class B common stock is immediately convertible, at the option of the shareholder, into one share of Class A common stock and shall automatically convert into Class A common stock upon the occurrence of certain events. Please see Altair Engineering Inc. Registration Statement filed with the Securities and Exchange Commission on Form S-1 (File No. 333-220710) for a description of the conversion rights.