Insider · CIK 0001839690

Buckner Stephanie

Reports to the SEC for 1 company · TROY, MI

sec.gov

Transactions

Companies

Filings

CIK

0001839690

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2025-03-26	Altair Engineering Inc.D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−7,588 sh	$113.00	−$857K	0
2025-03-26	Altair Engineering Inc.D Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−31.4K sh	$113.00	−$3.54M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−1,780 sh	$47.81	−$85.1K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−8,000 sh	$67.09	−$537K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−1,457 sh	$62.89	−$91.6K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−4,286 sh	$32.94	−$141K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−6,000 sh	$60.97	−$366K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−6,000 sh	$73.18	−$439K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−14.1K sh	$33.97	−$478K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−12.5K sh	$47.81	−$598K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−24K sh	$67.09	−$1.61M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−6,000 sh	$51.21	−$307K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−6,280 sh	$51.07	−$321K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−22.5K sh	$60.97	−$1.37M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−20.7K sh	$73.18	−$1.51M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−935 sh	$82.85	−$77.5K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Chief Operating Officer	DDisposition to Issuer	−300 sh	$107.82	−$32.3K	0
2025-03-17	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−47 sh	$111.30	−$5,231.1	7,588
2025-03-03	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−62 sh	$111.45	−$6,909.9	7,635
2025-02-12	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+9,923 sh	—	—	31,352
2025-02-12	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+323 sh	—	—	7,697
2025-01-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+73 sh	$82.42	+$6,016.66	7,374
2024-12-16	Altair Engineering Inc.Stock Option (Right to Buy)M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−1,800 sh	—	—	16,032
2024-12-16	Altair Engineering Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+1,800 sh	—	—	21,429
2024-07-12	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+83 sh	$71.68	+$5,949.44	7,207
2024-03-15	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+446 sh	—	—	7,124
2024-03-15	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+5,625 sh	—	—	19,629
2024-03-15	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+14.1K sh	—	—	14,063
2024-03-04	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−60 sh	$85.32	−$5,119.2	6,678
2024-03-04	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−486 sh	$85.32	−$41.5K	14,004
2024-01-12	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+94 sh	$63.92	+$6,008.48	7,301
2023-07-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+141 sh	$42.65	+$6,013.65	6,738
2023-07-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+141 sh	$42.65	+$6,013.65	14,916
2023-03-16	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−31 sh	$64.96	−$2,013.822	6,597
2023-03-02	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+5,000 sh	—	—	14,774
2023-03-02	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+12.5K sh	—	—	12,500
2023-03-02	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+1,780 sh	—	—	1,780
2023-03-02	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+593 sh	—	—	6,628
2023-03-01	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−174 sh	$63.84	−$11.1K	9,774
2023-01-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+142 sh	$42.31	+$6,008.02	9,948
2023-01-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+142 sh	$42.31	+$6,008.02	6,035
2022-12-15	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+24K sh	—	—	24,000
2022-07-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+143 sh	$41.68	+$5,960.24	9,806
2022-07-14	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+143 sh	$41.68	+$5,960.24	5,893
2022-05-11	Altair Engineering Inc.A Award	Chief Operating Officer	AAward	+486 sh	—	—	5,750
2022-05-11	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+1,457 sh	$50.11	+$73K	1,457
2022-03-16	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−333 sh	$58.48	−$19.5K	9,666
2022-03-16	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−3 sh	$59.90	−$179.7	9,663
2022-03-14	Altair Engineering Inc.S Sale	Chief Operating Officer	SSale	−81 sh	$59.96	−$4,857.084	9,999
2022-02-15	Altair Engineering Inc.Stock Option (Right to Buy)A Award	Chief Operating Officer	AAward	+6,000 sh	—	—	6,000

Recent filings

Accepted (ET)
Mar 264
Buckner Stephanie0000950170-25-045340
SEC(opens sec.gov)
Mar 194
Buckner Stephanie0001127602-25-009919
SEC(opens sec.gov)
Mar 54
Buckner Stephanie0001127602-25-008196
SEC(opens sec.gov)

Companies

Altair Engineering Inc.Chief Operating Officer

Address

C/O ALTAIR ENGINEERING INC. 1820 E. BIG BEAVER RD.

TROY, MI, 48083