| Symbol | Company | Owner | Relationship | Date | Transaction | Cost | # Shares | Value ($) | Total Shares | Filing | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Mar 18, 2024 | Sale | $80.74 | 5,000 | 403,712 | 4,500 | Mar 19, 2024, 05:32 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Feb 16, 2024 | Sale | $91.07 | 5,000 | 455,344 | 2,790 | Feb 20, 2024, 08:09 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jan 16, 2024 | Sale | $83.73 | 5,000 | 418,656 | 2,905 | Jan 18, 2024, 05:59 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Dec 18, 2023 | Sale | $74.12 | 5,000 | 370,575 | 68 | Dec 19, 2023, 07:07 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 16, 2023 | Sale | $72.52 | 5,000 | 362,609 | 4,053 | Nov 17, 2023, 04:21 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 16, 2023 | Sale | $65.23 | 5,000 | 326,169 | 3,698 | Oct 17, 2023, 03:13 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 18, 2023 | Sale | $65.29 | 5,000 | 326,450 | 0 | Sep 19, 2023, 08:02 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 16, 2023 | Sale | $62.47 | 5,000 | 312,325 | 0 | Aug 17, 2023, 11:59 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 17, 2023 | Sale | $74.91 | 5,000 | 374,558 | 2,601 | Jul 18, 2023, 11:03 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jun 16, 2023 | Sale | $75.18 | 5,000 | 375,876 | 1,400 | Jun 20, 2023, 10:47 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | May 16, 2023 | Sale | $67.94 | 5,000 | 339,715 | 0 | May 17, 2023, 02:05 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Apr 17, 2023 | Sale | $70.33 | 5,000 | 351,647 | 291 | Apr 18, 2023, 03:49 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Mar 15, 2023 | Sale | $66.16 | 15,000 | 992,426 | 6,507 | Mar 16, 2023, 09:20 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Feb 15, 2023 | Sale | $57.70 | 15,000 | 865,428 | 2,547 | Feb 16, 2023, 01:31 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jan 17, 2023 | Sale | $49.90 | 15,000 | 748,575 | 0 | Jan 19, 2023, 02:46 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jan 09, 2023 | Sale | $48.45 | 15,000 | 726,762 | 217 | Jan 10, 2023, 04:42 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Dec 15, 2021 | Sale | $71.32 | 19,140 | 1,365,138 | 14,163 | Dec 17, 2021, 10:59 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 17, 2021 | Sale | $78.27 | 8,860 | 693,446 | 0 | Nov 19, 2021, 01:40 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 16, 2021 | Sale | $79.13 | 7,075 | 559,870 | 3,860 | Nov 17, 2021, 12:01 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 15, 2021 | Sale | $77.75 | 6,747 | 524,598 | 100 | Nov 17, 2021, 12:01 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 19, 2021 | Sale | $74.15 | 9,076 | 672,948 | 8,270 | Oct 21, 2021, 09:50 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 15, 2021 | Sale | $73.45 | 10,168 | 746,806 | 4,346 | Oct 19, 2021, 11:02 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 18, 2021 | Sale | $73.66 | 10,756 | 792,253 | 10,456 | Oct 19, 2021, 11:02 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 17, 2021 | Sale | $74.69 | 14,571 | 1,088,238 | 2,700 | Sep 20, 2021, 10:40 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 15, 2021 | Sale | $75.42 | 7,564 | 570,450 | 6,164 | Sep 17, 2021, 02:14 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 16, 2021 | Sale | $75.11 | 7,865 | 590,712 | 100 | Sep 17, 2021, 02:14 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 18, 2021 | Sale | $70.95 | 9,721 | 689,666 | 0 | Aug 19, 2021, 10:12 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 16, 2021 | Sale | $72.11 | 14,620 | 1,054,320 | 12,109 | Aug 18, 2021, 10:56 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 17, 2021 | Sale | $71.12 | 5,659 | 402,445 | 0 | Aug 18, 2021, 10:56 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 19, 2021 | Sale | $64.95 | 4,742 | 307,998 | 4,042 | Jul 20, 2021, 02:39 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 15, 2021 | Sale | $66.02 | 12,177 | 803,927 | 2,500 | Jul 19, 2021, 11:33 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 16, 2021 | Sale | $65.22 | 13,081 | 853,131 | 6,834 | Jul 19, 2021, 11:33 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | May 19, 2021 | Sale | $60.94 | 6,130 | 373,550 | 994 | May 20, 2021, 09:37 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Apr 15, 2021 | Sale | $63.30 | 30,000 | 1,899,113 | 22,168 | Apr 16, 2021, 01:26 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Mar 17, 2021 | Sale | $60.25 | 4,010 | 241,584 | 700 | Mar 18, 2021, 06:17 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Mar 15, 2021 | Sale | $61.29 | 9,322 | 571,328 | 6,722 | Mar 17, 2021, 06:57 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Mar 16, 2021 | Sale | $61.02 | 16,668 | 1,017,057 | 6,641 | Mar 17, 2021, 06:57 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Feb 16, 2021 | Sale | $66.19 | 15,941 | 1,055,074 | 9,359 | Feb 18, 2021, 09:33 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Feb 17, 2021 | Sale | $62.61 | 14,059 | 880,183 | 2,900 | Feb 18, 2021, 09:33 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jan 20, 2021 | Sale | $61.89 | 7,205 | 445,939 | 3,372 | Jan 22, 2021, 06:59 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jan 15, 2021 | Sale | $60.48 | 22,795 | 1,378,557 | 3,201 | Jan 20, 2021, 05:37 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Dec 17, 2020 | Sale | $57.81 | 2,070 | 119,675 | 554 | Dec 21, 2020, 05:29 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Dec 15, 2020 | Sale | $56.83 | 8,947 | 508,464 | 8,347 | Dec 17, 2020, 05:43 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Dec 16, 2020 | Sale | $57.01 | 8,983 | 512,133 | 104 | Dec 17, 2020, 05:43 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 17, 2020 | Sale | $49.26 | 10,535 | 518,908 | 5,583 | Nov 18, 2020, 02:51 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Nov 16, 2020 | Sale | $49.07 | 9,465 | 464,481 | 2,312 | Nov 18, 2020, 02:51 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 19, 2020 | Sale | $46.29 | 4,384 | 202,940 | 0 | Oct 21, 2020, 03:58 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 15, 2020 | Sale | $45.76 | 9,564 | 437,696 | 0 | Oct 19, 2020, 05:29 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 16, 2020 | Sale | $46.29 | 6,052 | 280,147 | 0 | Oct 19, 2020, 05:29 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 16, 2020 | Sale | $40.83 | 13,106 | 535,116 | 7,445 | Sep 17, 2020, 07:02 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 15, 2020 | Sale | $39.64 | 6,884 | 272,902 | 0 | Sep 17, 2020, 07:02 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 17, 2020 | Sale | $40.43 | 9,049 | 365,887 | 0 | Aug 19, 2020, 02:32 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 18, 2020 | Sale | $41.06 | 10,951 | 449,679 | 2,391 | Aug 19, 2020, 02:32 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 17, 2020 | Sale | $37.78 | 1,088 | 41,099 | 100 | Jul 20, 2020, 04:25 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 16, 2020 | Sale | $37.21 | 8,705 | 323,951 | 100 | Jul 17, 2020, 03:07 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 15, 2020 | Sale | $37.99 | 10,207 | 387,784 | 0 | Jul 17, 2020, 03:07 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 02, 2019 | Sale | $32.83 | 4,975 | 163,354 | 0 | Oct 03, 2019, 12:56 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Oct 01, 2019 | Sale | $34.01 | 5,025 | 170,894 | 874 | Oct 03, 2019, 07:37 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Sep 03, 2019 | Sale | $33.75 | 10,000 | 337,510 | 500 | Sep 05, 2019, 06:47 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 01, 2019 | Sale | $41.56 | 4,814 | 200,074 | 643 | Aug 05, 2019, 08:28 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Aug 02, 2019 | Sale | $40.35 | 5,186 | 209,271 | 100 | Aug 05, 2019, 08:28 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 02, 2019 | Sale | $40.43 | 1,491 | 60,281 | 0 | Jul 05, 2019, 09:27 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jul 01, 2019 | Sale | $40.94 | 8,509 | 348,358 | 0 | Jul 03, 2019, 09:37 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jun 03, 2019 | Sale | $36.85 | 10,000 | 368,503 | 100 | Jun 05, 2019, 09:23 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | May 03, 2019 | Sale | $37.02 | 1,029 | 38,094 | 0 | May 07, 2019, 09:10 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | May 02, 2019 | Sale | $36.88 | 4,059 | 149,696 | 0 | May 06, 2019, 08:29 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | May 01, 2019 | Sale | $38.30 | 4,912 | 188,134 | 700 | May 03, 2019, 10:55 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Apr 10, 2019 | Sale | $36.90 | 4,399 | 162,301 | 0 | Apr 12, 2019, 01:41 PM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Apr 09, 2019 | Sale | $36.78 | 3,301 | 121,401 | 0 | Apr 10, 2019, 07:25 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Apr 08, 2019 | Sale | $37.15 | 2,300 | 85,438 | 0 | Apr 09, 2019, 08:07 AM | |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | Jun 11, 2018 | Sale | $33.42 | 100,000 | 3,342,500 | 0 | Jun 11, 2018, 04:21 PM |
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