Insider · CIK 0001720314

Scapa James Ralph

Reports to the SEC for 1 company · TROY, MI

sec.gov

Transactions

Companies

Filings

CIK

0001720314

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	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−191K sh	$113.00	−$21.5M	0
2025-03-26	Altair Engineering Inc.D Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−1,184 sh	$113.00	−$134K	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−10.7K sh	$107.82	−$1.15M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−15K sh	$74.89	−$1.12M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−40K sh	$82.85	−$3.31M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−40K sh	$51.07	−$2.04M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−80K sh	$48.46	−$3.88M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−114K sh	$47.81	−$5.45M	0
2025-03-26	Altair Engineering Inc.Class A Common Stock OptionD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−123K sh	$33.97	−$4.18M	0
2025-03-26	Altair Engineering Inc.Class B Common StockD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−10.2M sh	$113.00	−$1.16B	0
2025-03-26	Altair Engineering Inc.Class B Common StockD Disposition to Issuer	Director, Chief Executive Officer, 10% Owner	DDisposition to Issuer	−6.63M sh	$113.00	−$749M	0
2025-03-17	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−9 sh	$111.30	−$1,001.7	1,184
2025-02-12	Altair Engineering Inc.A Award	Director, Chief Executive Officer, 10% Owner	AAward	+72.6K sh	—	—	190,505
2024-12-03	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−16.1K sh	$105.65	−$1.7M	117,950
2024-11-29	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-11-29	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−6,500 sh	$105.69	−$687K	0
2024-11-29	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-11-29	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−6,500 sh	$105.69	−$687K	0
2024-11-29	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	10,241,110
2024-11-29	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	6,626,682
2024-10-28	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−3,683 sh	$102.08	−$376K	2,817
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−2,522 sh	$103.19	−$260K	295
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−295 sh	$103.84	−$30.6K	0
2024-10-28	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−3,682 sh	$102.08	−$376K	2,818
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−2,522 sh	$103.19	−$260K	296
2024-10-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−296 sh	$103.84	−$30.7K	0
2024-10-28	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	10,247,610
2024-10-28	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	6,633,182
2024-09-30	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-09-30	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−5,572 sh	$95.03	−$530K	928
2024-09-30	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−928 sh	$95.55	−$88.7K	0
2024-09-30	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-09-30	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−5,572 sh	$95.03	−$530K	928
2024-09-30	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−928 sh	$95.55	−$88.7K	0
2024-09-30	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	10,254,110
2024-09-30	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	6,639,682
2024-08-28	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-08-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−5,010 sh	$88.89	−$445K	1,490
2024-08-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−1,490 sh	$89.53	−$133K	0
2024-08-28	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-08-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−5,010 sh	$88.89	−$445K	1,490
2024-08-28	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−1,490 sh	$89.53	−$133K	0
2024-08-28	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	10,260,610
2024-08-28	Altair Engineering Inc.Class B Common StockC Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	−6,500 sh	—	—	6,646,182
2024-07-29	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500
2024-07-29	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−5,017 sh	$87.96	−$441K	1,483
2024-07-29	Altair Engineering Inc.S Sale	Director, Chief Executive Officer, 10% Owner	SSale	−1,483 sh	$88.60	−$131K	0
2024-07-29	Altair Engineering Inc.C Conversion	Director, Chief Executive Officer, 10% Owner	CConversion	+6,500 sh	—	—	6,500

Recent filings

Accepted (ET)
Mar 264
Scapa James Ralph0000950170-25-045374
SEC(opens sec.gov)
Mar 194
Scapa James Ralph0001127602-25-009934
SEC(opens sec.gov)
Feb 144
Scapa James Ralph0001127602-25-004820
SEC(opens sec.gov)
Dec 54
Scapa James Ralph0001127602-24-028683
SEC(opens sec.gov)
Dec 24
Scapa James Ralph0001127602-24-028288
SEC(opens sec.gov)

Companies

Altair Engineering Inc.Director, Chief Executive Officer, 10% Owner

Address

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

TROY, MI, 48083