Altair Engineering Inc.
Total Trades
257
Buys
0
Sells
221
Largest Trade
N/A
Insiders
20
Institutional Funds
1
Inst. Value
$1K–$15K
Activist Filings
19
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Kunju Ravi | Chief Product Stra… | SELL | $15K–$50K | 360 | $69.05 | Nov 13, 2023 |
| Maitra Raoul | Chief Legal Officer | SELL | $100K–$500K | 2K | $68.79 | Nov 9, 2023 |
| Marraccini Jeffrey | See Remarks | SELL | $100K–$500K | 4K | $67.58 | Nov 8, 2023 |
| Marraccini Jeffrey | See Remarks | EXERCISE | N/A | 4K | — | Nov 8, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $65.23 | Oct 17, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $65.23 | Oct 17, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $65.23 | Oct 17, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $65.29 | Sep 20, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $65.29 | Sep 20, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $65.29 | Sep 20, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $62.47 | Aug 17, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $62.47 | Aug 17, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $62.47 | Aug 17, 2023 |
| Messano Amy | Chief Marketing Of… | SELL | $15K–$50K | 360 | $61.88 | Aug 10, 2023 |
| Christ George J | 10% Owner | SELL | $1M+ | 100K | $74.42 | Jul 20, 2023 |
| Christ Revocable Trust | 10% Owner | SELL | $1M+ | 100K | $74.42 | Jul 20, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $74.91 | Jul 18, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $74.91 | Jul 18, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $74.91 | Jul 18, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $75.18 | Jun 20, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $75.18 | Jun 20, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $75.18 | Jun 20, 2023 |
| Srikanth Mahalingam | CTO | SELL | $100K–$500K | 3K | $74.92 | Jun 13, 2023 |
| Messano Amy | Chief Marketing Of… | SELL | $1K–$15K | 109 | $74.63 | Jun 12, 2023 |
| Marraccini Jeffrey | See Remarks | SELL | $100K–$500K | 3K | $74.94 | Jun 8, 2023 |
| Marraccini Jeffrey | See Remarks | EXERCISE | N/A | 3K | — | Jun 8, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 9K | $74.30 | Jun 7, 2023 |
| Christ George J | 10% Owner | SELL | $1M+ | 100K | $74.42 | Jun 7, 2023 |
| Christ Revocable Trust | 10% Owner | SELL | $1M+ | 100K | $74.42 | Jun 7, 2023 |
| Dias Nelson | Chief Revenue Offi… | SELL | $100K–$500K | 2K | $74.03 | Jun 5, 2023 |
| Dias Nelson | Chief Revenue Offi… | EXERCISE | N/A | 2K | — | Jun 5, 2023 |
| Maitra Raoul | Chief Legal Officer | SELL | $50K–$100K | 847 | $72.70 | May 26, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $67.94 | May 17, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $67.94 | May 17, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $67.94 | May 17, 2023 |
| Dias Nelson | Chief Revenue Offi… | SELL | $100K–$500K | 4K | $67.78 | May 17, 2023 |
| Dias Nelson | Chief Revenue Offi… | EXERCISE | N/A | 4K | — | May 17, 2023 |
| Scapa James Ralph | CEO | SELL | $15K–$50K | 548 | $67.40 | May 15, 2023 |
| Marraccini Jeffrey | See Remarks | SELL | $1K–$15K | 41 | $67.40 | May 15, 2023 |
| Scapa James Ralph | CEO | SELL | $100K–$500K | 5K | $67.82 | May 11, 2023 |
| Scapa James Ralph | CEO | SELL | $500K+ | 10K | $70.33 | Apr 18, 2023 |
| JRS Investments LLC | 10% Owner | SELL | $100K–$500K | 5K | $70.33 | Apr 18, 2023 |
| James R. Scapa Declaration of Trust | 10% Owner | SELL | $100K–$500K | 5K | $70.33 | Apr 18, 2023 |
| Christ George J | 10% Owner | SELL | $1M+ | 100K | $71.23 | Apr 17, 2023 |
| GC Investments LLC | 10% Owner | SELL | $1M+ | 100K | $71.23 | Apr 17, 2023 |
| Christ George J | 10% Owner | SELL | $1M+ | 50K | $70.50 | Apr 12, 2023 |
| Christ Revocable Trust | 10% Owner | SELL | $1M+ | 50K | $70.50 | Apr 12, 2023 |
| Christ George J | 10% Owner | SELL | $1M+ | 50K | $70.49 | Apr 10, 2023 |
| Christ Revocable Trust | 10% Owner | SELL | $1M+ | 50K | $70.49 | Apr 10, 2023 |
| Scapa James Ralph | CEO | SELL | $100K–$500K | 2K | $64.97 | Mar 17, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 1 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| HUNTINGTON NATIONAL BANK | 1 | $1K–$15K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Matrix Capital Management Company, LP
SC 13G/A · Apr 7, 2025
0.0%
0 shares
SC 13G/A · Mar 26, 2025
0.0%
0 shares
SC 13G/A · Mar 26, 2025
0.0%
0 shares
SC 13G/A · Feb 5, 2025
12.5%
7.5M shares
SC 13G · Nov 21, 2024
3.8%
2.3M shares
Matrix Capital Management Company LP
SC 13G/A · Nov 13, 2024
20.9%
12.4M shares
SC 13G/A · Nov 8, 2024
22.3%
17.1M shares
SC 13G/A · Nov 8, 2024
13.9%
9.5M shares
SC 13G/A · Jul 8, 2024
13.8%
7.9M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.6%
5.8M shares
Matrix Capital Management Company LP
SC 13G/A · Feb 13, 2024
22.4%
12.2M shares
SC 13G/A · Feb 13, 2024
23.9%
17.1M shares
SC 13G/A · Feb 13, 2024
15.8%
10.2M shares
SC 13G · Jan 31, 2024
5.3%
2.9M shares
SC 13G/A · Jan 25, 2024
8.4%
4.6M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jun 9, 2023
10.1%
5.4M shares
Matrix Capital Management Company LP
SC 13G/A · Feb 13, 2023
20.8%
10.9M shares
SC 13G/A · Jan 31, 2023
7.7%
4.1M shares
Matrix Capital Management Company LP
SC 13G/A · Feb 14, 2022
16.9%
8.6M shares