| Lastest Insider Transactions Of Altair Engineering Inc. ( ALTR ) |
| Symbol | Company Name | Insider Name | Title | Date | Transation | Share | Price | Amount | File Date |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2024-04-09 | Sell | 12,783 | 85.85 | 1,097,379 | 2024-04-11 16:44:39 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-04-09 | Sell | 12,783 | 85.85 | 1,097,379 | 2024-04-11 16:38:53 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2024-04-02 | Sell | 620 | 84.00 | 52,080 | 2024-04-03 10:17:26 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2024-04-02 | Option Exercise | 620 | 0.00 | 0 | 2024-04-03 10:17:26 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2024-03-28 | Sell | 83,336 | 85.99 | 7,165,780 | 2024-04-01 10:47:14 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-03-28 | Sell | 83,336 | 85.99 | 7,165,780 | 2024-04-01 10:41:37 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-03-28 | Sell | 83,336 | 85.99 | 7,165,780 | 2024-04-01 10:41:37 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2024-03-26 | Sell | 3,904 | 85.42 | 333,490 | 2024-03-28 14:54:15 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-03-26 | Sell | 3,904 | 85.42 | 333,490 | 2024-03-28 14:49:39 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-03-26 | Sell | 3,904 | 85.42 | 333,490 | 2024-03-28 14:49:39 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2024-03-22 | Sell | 12,760 | 86.71 | 1,106,378 | 2024-03-26 13:23:48 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-03-22 | Sell | 12,760 | 86.71 | 1,106,378 | 2024-03-26 13:17:35 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2024-03-18 | Sell | 10,000 | 80.74 | 807,424 | 2024-03-19 17:34:28 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2024-03-18 | Sell | 5,000 | 80.74 | 403,712 | 2024-03-19 17:32:35 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2024-03-18 | Sell | 5,000 | 80.74 | 403,712 | 2024-03-19 17:28:32 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2024-03-13 | Sell | 112 | 81.66 | 9,145 | 2024-03-14 16:03:54 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2024-03-13 | Sell | 1,779 | 81.66 | 145,272 | 2024-03-14 16:02:19 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2024-03-13 | Sell | 105 | 81.66 | 8,574 | 2024-03-14 16:00:33 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2024-03-13 | Sell | 75 | 81.66 | 6,125 | 2024-03-14 15:58:32 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2024-03-13 | Sell | 76 | 81.65 | 6,206 | 2024-03-14 15:52:37 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2024-03-06 | Sell | 5,778 | 83.04 | 479,807 | 2024-03-07 12:09:03 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2024-03-06 | Option Exercise | 5,778 | 0.00 | 0 | 2024-03-07 12:09:03 |
| ALTR | Altair Engineering Inc. | Buckner Stephanie | Chief Operating Officer | 2024-03-04 | Sell | 546 | 85.32 | 46,585 | 2024-03-06 16:55:53 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2024-03-05 | Sell | 620 | 85.01 | 52,706 | 2024-03-06 16:39:17 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2024-03-05 | Option Exercise | 620 | 0.00 | 0 | 2024-03-06 16:39:17 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2024-03-04 | Sell | 134 | 85.32 | 11,433 | 2024-03-05 14:42:58 |
| ALTR | Altair Engineering Inc. | Brown Matthew Charles | Chief Financial Officer | 2024-03-04 | Sell | 883 | 85.32 | 75,338 | 2024-03-05 14:41:52 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2024-03-04 | Sell | 197 | 85.32 | 16,808 | 2024-03-05 14:40:41 |
| ALTR | Altair Engineering Inc. | Saravia Gilma | Chief People Officer | 2024-03-04 | Sell | 264 | 85.32 | 22,524 | 2024-03-05 14:39:08 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2024-03-04 | Sell | 491 | 85.32 | 41,892 | 2024-03-05 14:37:56 |
| ALTR | Altair Engineering Inc. | Srikanth Mahalingam | Chief Technology Officer | 2024-03-04 | Sell | 457 | 85.32 | 38,991 | 2024-03-05 14:36:44 |
| ALTR | Altair Engineering Inc. | Gayle Brian | Chief Accounting Officer | 2024-03-04 | Sell | 193 | 85.32 | 16,467 | 2024-03-05 14:35:38 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2024-03-04 | Sell | 3,300 | 85.32 | 281,556 | 2024-03-05 14:34:26 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2024-03-04 | Sell | 285 | 85.32 | 24,316 | 2024-03-05 14:33:19 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2024-03-04 | Sell | 291 | 85.32 | 24,828 | 2024-03-05 14:31:53 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2024-02-28 | Sell | 236 | 83.65 | 19,742 | 2024-02-29 15:47:57 |
| ALTR | Altair Engineering Inc. | Saravia Gilma | Chief People Officer | 2024-02-28 | Sell | 1,003 | 83.65 | 83,902 | 2024-02-29 15:45:30 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2024-02-28 | Sell | 189 | 83.65 | 15,810 | 2024-02-29 15:42:48 |
| ALTR | Altair Engineering Inc. | Gayle Brian | Chief Accounting Officer | 2024-02-28 | Sell | 138 | 83.65 | 11,544 | 2024-02-29 15:39:25 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2024-02-28 | Sell | 121 | 83.65 | 10,122 | 2024-02-29 15:37:29 |
| ALTR | Altair Engineering Inc. | Brown Matthew Charles | Chief Financial Officer | 2024-02-28 | Sell | 4,363 | 83.65 | 364,969 | 2024-02-29 15:34:55 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2024-02-28 | Sell | 375 | 83.65 | 31,369 | 2024-02-29 15:29:22 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2024-02-16 | Sell | 10,000 | 91.07 | 910,688 | 2024-02-20 08:13:48 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2024-02-16 | Sell | 5,000 | 91.07 | 455,344 | 2024-02-20 08:09:56 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2024-02-16 | Sell | 5,000 | 91.07 | 455,344 | 2024-02-20 08:07:50 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2024-01-23 | Sell | 100,000 | 87.32 | 8,732,124 | 2024-01-25 15:48:02 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2024-01-23 | Sell | 100,000 | 87.32 | 8,732,124 | 2024-01-25 15:46:08 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2024-01-16 | Sell | 10,000 | 83.73 | 837,312 | 2024-01-18 18:01:04 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2024-01-16 | Sell | 5,000 | 83.73 | 418,656 | 2024-01-18 17:59:24 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2024-01-16 | Sell | 5,000 | 83.73 | 418,656 | 2024-01-18 17:55:23 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-12-18 | Sell | 10,000 | 74.12 | 741,150 | 2023-12-19 19:08:38 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-12-18 | Sell | 5,000 | 74.12 | 370,575 | 2023-12-19 19:07:23 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-12-18 | Sell | 5,000 | 74.11 | 370,575 | 2023-12-19 19:05:30 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-12-08 | Sell | 4,564 | 71.58 | 326,688 | 2023-12-11 09:16:52 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-12-08 | Sell | 4,564 | 71.58 | 326,688 | 2023-12-11 09:10:24 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-12-06 | Sell | 14,411 | 72.05 | 1,038,366 | 2023-12-08 12:00:50 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-12-06 | Sell | 14,411 | 72.05 | 1,038,366 | 2023-12-08 11:55:07 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2023-12-06 | Sell | 600 | 71.65 | 42,990 | 2023-12-08 11:50:13 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2023-12-06 | Option Exercise | 600 | 0.00 | 0 | 2023-12-08 11:50:13 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-12-01 | Sell | 45,766 | 72.79 | 3,331,165 | 2023-12-05 15:04:05 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-12-01 | Sell | 45,766 | 72.79 | 3,331,165 | 2023-12-05 14:58:36 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-11-29 | Sell | 26,682 | 73.08 | 1,949,987 | 2023-12-01 14:22:33 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-11-29 | Sell | 26,682 | 73.08 | 1,949,987 | 2023-12-01 14:20:57 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-11-20 | Sell | 108,577 | 73.93 | 8,026,666 | 2023-11-22 12:07:25 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-11-21 | Sell | 8,577 | 73.09 | 626,929 | 2023-11-22 12:06:08 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2023-11-20 | Sell | 100,000 | 74.00 | 7,399,737 | 2023-11-22 12:04:49 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-11-16 | Sell | 10,000 | 72.52 | 725,218 | 2023-11-17 16:22:38 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-11-16 | Sell | 5,000 | 72.52 | 362,609 | 2023-11-17 16:21:30 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-11-16 | Sell | 5,000 | 72.52 | 362,609 | 2023-11-17 16:20:16 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2023-11-14 | Sell | 1,800 | 73.16 | 131,683 | 2023-11-16 08:48:13 |
| ALTR | Altair Engineering Inc. | Harris Teresa A | Directior | 2023-11-14 | Option Exercise | 1,800 | 0.00 | 0 | 2023-11-16 08:48:13 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2023-11-10 | Sell | 360 | 69.05 | 24,858 | 2023-11-13 12:36:22 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-11-08 | Sell | 1,600 | 68.79 | 110,061 | 2023-11-09 10:24:10 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-11-07 | Sell | 3,711 | 67.58 | 250,786 | 2023-11-08 18:24:31 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-11-07 | Option Exercise | 3,711 | 0.00 | 0 | 2023-11-08 18:24:31 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-10-16 | Sell | 10,000 | 65.23 | 652,339 | 2023-10-17 15:15:00 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-10-16 | Sell | 5,000 | 65.23 | 326,169 | 2023-10-17 15:13:33 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-10-16 | Sell | 5,000 | 65.23 | 326,169 | 2023-10-17 15:11:50 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-09-18 | Sell | 10,000 | 65.29 | 652,900 | 2023-09-19 20:04:24 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-09-18 | Sell | 5,000 | 65.29 | 326,450 | 2023-09-19 20:02:09 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-09-18 | Sell | 5,000 | 65.29 | 326,450 | 2023-09-19 20:00:37 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-08-16 | Sell | 10,000 | 62.47 | 624,650 | 2023-08-17 12:00:16 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-08-16 | Sell | 5,000 | 62.47 | 312,325 | 2023-08-17 11:59:03 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-08-16 | Sell | 5,000 | 62.47 | 312,325 | 2023-08-17 11:57:46 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-08-10 | Option Exercise | 4,000 | 3.84 | 15,360 | 2023-08-10 19:10:31 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2023-08-09 | Sell | 360 | 61.88 | 22,277 | 2023-08-10 15:17:15 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-07-19 | Sell | 100,000 | 74.42 | 7,442,208 | 2023-07-20 10:24:31 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2023-07-19 | Sell | 100,000 | 74.42 | 7,442,208 | 2023-07-20 10:23:28 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-07-17 | Sell | 10,000 | 74.91 | 749,117 | 2023-07-18 11:05:09 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-07-17 | Sell | 5,000 | 74.91 | 374,558 | 2023-07-18 11:03:42 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-07-17 | Sell | 5,000 | 74.91 | 374,558 | 2023-07-18 11:02:25 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-06-16 | Sell | 10,000 | 75.18 | 751,752 | 2023-06-20 10:48:20 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-06-16 | Sell | 5,000 | 75.18 | 375,876 | 2023-06-20 10:47:01 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-06-16 | Sell | 5,000 | 75.18 | 375,876 | 2023-06-20 10:45:41 |
| ALTR | Altair Engineering Inc. | Srikanth Mahalingam | Chief Technology Officer | 2023-03-09 | Sell | 2,883 | 74.92 | 216,004 | 2023-06-13 18:51:50 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2023-06-09 | Sell | 109 | 74.63 | 8,134 | 2023-06-12 07:47:40 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-06-07 | Sell | 3,151 | 74.94 | 236,146 | 2023-06-08 12:06:27 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-06-07 | Option Exercise | 3,151 | 0.00 | 0 | 2023-06-08 12:06:27 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-06-06 | Sell | 9,267 | 74.30 | 688,557 | 2023-06-07 12:40:23 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-06-06 | Sell | 100,000 | 74.42 | 7,442,180 | 2023-06-07 12:38:50 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2023-06-06 | Sell | 100,000 | 74.42 | 7,442,180 | 2023-06-07 12:33:36 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-06-02 | Sell | 2,356 | 74.03 | 174,403 | 2023-06-05 15:34:09 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-06-02 | Option Exercise | 2,356 | 0.00 | 0 | 2023-06-05 15:34:09 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-05-26 | Sell | 847 | 72.70 | 61,578 | 2023-05-26 15:13:43 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-05-16 | Sell | 10,000 | 67.94 | 679,430 | 2023-05-17 14:06:32 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-05-16 | Sell | 5,000 | 67.94 | 339,715 | 2023-05-17 14:05:01 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-05-16 | Sell | 5,000 | 67.94 | 339,715 | 2023-05-17 14:03:43 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-05-16 | Sell | 3,636 | 67.78 | 246,459 | 2023-05-17 09:58:51 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-05-16 | Option Exercise | 3,636 | 0.00 | 0 | 2023-05-17 09:58:51 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-05-12 | Sell | 548 | 67.40 | 36,935 | 2023-05-15 18:31:52 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-05-12 | Sell | 41 | 67.40 | 2,763 | 2023-05-15 18:30:18 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-05-10 | Sell | 5,358 | 67.82 | 363,380 | 2023-05-11 10:47:34 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-04-17 | Sell | 10,000 | 70.33 | 703,294 | 2023-04-18 15:50:31 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-04-17 | Sell | 5,000 | 70.33 | 351,647 | 2023-04-18 15:49:09 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-04-17 | Sell | 5,000 | 70.33 | 351,647 | 2023-04-18 15:47:34 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-04-13 | Sell | 100,000 | 71.23 | 7,123,397 | 2023-04-17 08:41:26 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-04-13 | Sell | 100,000 | 71.23 | 7,123,397 | 2023-04-17 08:40:14 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-04-11 | Sell | 50,000 | 70.50 | 3,525,200 | 2023-04-12 15:53:03 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2023-04-11 | Sell | 50,000 | 70.50 | 3,525,200 | 2023-04-12 15:51:38 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-04-06 | Sell | 50,000 | 70.49 | 3,524,550 | 2023-04-10 14:02:27 |
| ALTR | Altair Engineering Inc. | Christ Revocable Trust | 10% Owner | 2023-04-06 | Sell | 50,000 | 70.49 | 3,524,550 | 2023-04-10 14:01:02 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-03-16 | Sell | 1,893 | 64.97 | 122,988 | 2023-03-17 14:22:13 |
| ALTR | Altair Engineering Inc. | Srikanth Mahalingam | Chief Technology Officer | 2023-03-16 | Sell | 5,152 | 67.72 | 348,916 | 2023-03-17 14:20:51 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-03-16 | Sell | 538 | 65.65 | 35,318 | 2023-03-17 14:17:51 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2023-03-16 | Sell | 155 | 64.97 | 10,070 | 2023-03-17 14:16:28 |
| ALTR | Altair Engineering Inc. | Gayle Brian | Chief Accounting Officer | 2023-03-16 | Sell | 376 | 65.63 | 24,677 | 2023-03-17 14:15:13 |
| ALTR | Altair Engineering Inc. | Buckner Stephanie | Chief Operating Officer | 2023-03-16 | Sell | 31 | 64.96 | 2,014 | 2023-03-17 14:13:48 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-03-16 | Sell | 313 | 64.97 | 20,337 | 2023-03-17 14:12:19 |
| ALTR | Altair Engineering Inc. | Saravia Gilma | Chief People Officer | 2023-03-16 | Sell | 155 | 64.97 | 10,071 | 2023-03-17 14:01:30 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-03-16 | Sell | 220 | 64.97 | 14,293 | 2023-03-17 14:00:15 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2023-03-16 | Sell | 113 | 64.97 | 7,342 | 2023-03-17 13:59:07 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-03-15 | Sell | 35,000 | 66.16 | 2,315,661 | 2023-03-16 09:24:06 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-03-15 | Sell | 15,000 | 66.16 | 992,426 | 2023-03-16 09:20:06 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-03-15 | Sell | 20,000 | 66.16 | 1,323,235 | 2023-03-16 09:18:46 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-03-15 | Sell | 1,524 | 65.47 | 99,776 | 2023-03-16 09:08:50 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-03-15 | Option Exercise | 1,524 | 0.00 | 0 | 2023-03-16 09:08:50 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-03-14 | Sell | 50,182 | 66.02 | 3,312,964 | 2023-03-16 09:07:02 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-03-14 | Sell | 50,182 | 66.02 | 3,312,964 | 2023-03-16 09:04:42 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-03-13 | Sell | 1,505 | 62.49 | 94,049 | 2023-03-15 16:42:07 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-03-13 | Sell | 77 | 62.49 | 4,812 | 2023-03-15 16:34:52 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2023-03-13 | Sell | 76 | 62.49 | 4,749 | 2023-03-15 16:31:17 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2023-03-13 | Sell | 114 | 62.49 | 7,124 | 2023-03-15 16:29:36 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-03-13 | Sell | 125 | 62.49 | 7,811 | 2023-03-15 16:26:46 |
| ALTR | Altair Engineering Inc. | Christ George J | 10% Owner | 2023-03-10 | Sell | 49,818 | 64.77 | 3,226,463 | 2023-03-14 14:11:49 |
| ALTR | Altair Engineering Inc. | GC Investments LLC | 10% Owner | 2023-03-10 | Sell | 49,818 | 64.77 | 3,226,463 | 2023-03-14 14:10:18 |
| ALTR | Altair Engineering Inc. | Saravia Gilma | Chief People Officer | 2023-03-01 | Sell | 925 | 63.84 | 59,052 | 2023-03-03 13:22:40 |
| ALTR | Altair Engineering Inc. | Messano Amy | Chief Marketing Officer | 2023-03-01 | Sell | 519 | 63.84 | 33,133 | 2023-03-03 13:20:49 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-03-01 | Sell | 154 | 63.84 | 9,831 | 2023-03-03 13:16:00 |
| ALTR | Altair Engineering Inc. | Kunju Ravi | Chief Product Strategy Officer | 2023-03-01 | Sell | 120 | 63.84 | 7,661 | 2023-03-03 13:12:41 |
| ALTR | Altair Engineering Inc. | Gayle Brian | Chief Accounting Officer | 2023-03-01 | Sell | 157 | 63.84 | 10,023 | 2023-03-03 13:09:44 |
| ALTR | Altair Engineering Inc. | Dias Nelson | Chief Revenue Officer | 2023-03-01 | Sell | 373 | 63.84 | 23,812 | 2023-03-03 13:07:38 |
| ALTR | Altair Engineering Inc. | Buckner Stephanie | Chief Operating Officer | 2023-03-01 | Sell | 174 | 63.84 | 11,108 | 2023-03-03 13:00:23 |
| ALTR | Altair Engineering Inc. | Brown Matthew Charles | Chief Financial Officer | 2023-03-01 | Sell | 3,477 | 63.84 | 221,972 | 2023-03-03 12:54:58 |
| ALTR | Altair Engineering Inc. | Marraccini Jeffrey | See Remarks | 2023-02-28 | Sell | 2,039 | 64.48 | 131,475 | 2023-03-02 10:57:37 |
| ALTR | Altair Engineering Inc. | Ayyar Shekar G | Directior | 2023-03-01 | Sell | 4,177 | 64.76 | 270,486 | 2023-03-02 08:07:11 |
| ALTR | Altair Engineering Inc. | Gayle Brian | Chief Accounting Officer | 2023-02-28 | Sell | 1,156 | 64.50 | 74,558 | 2023-03-01 08:38:47 |
| ALTR | Altair Engineering Inc. | Maitra Raoul | Chief Legal Officer | 2023-02-28 | Sell | 2,500 | 64.53 | 161,325 | 2023-03-01 08:37:18 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-02-15 | Sell | 35,000 | 57.70 | 2,019,332 | 2023-02-16 13:32:40 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-02-15 | Sell | 15,000 | 57.70 | 865,428 | 2023-02-16 13:31:17 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-02-15 | Sell | 20,000 | 57.70 | 1,153,904 | 2023-02-16 13:29:49 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-01-17 | Sell | 35,000 | 49.91 | 1,746,675 | 2023-01-19 14:48:19 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-01-17 | Sell | 15,000 | 49.91 | 748,575 | 2023-01-19 14:46:48 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-01-17 | Sell | 20,000 | 49.91 | 998,100 | 2023-01-19 14:45:08 |
| ALTR | Altair Engineering Inc. | Scapa James Ralph | Chief Executive Officer 10% Owner | 2023-01-09 | Sell | 35,000 | 48.45 | 1,695,777 | 2023-01-10 16:43:42 |
| ALTR | Altair Engineering Inc. | JRS Investments LLC | 10% Owner | 2023-01-09 | Sell | 15,000 | 48.45 | 726,762 | 2023-01-10 16:42:02 |
| ALTR | Altair Engineering Inc. | James R. Scapa Declaration of Trust | 10% Owner | 2023-01-09 | Sell | 20,000 | 48.45 | 969,015 | 2023-01-10 16:38:05 |
