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NORTHERN TRUST CORP
> ALTR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Altair Engineering Inc. | ALTR | 537,528 | 20,618 | 40,766,124,000 | 3,491,744,000 | $75,840.00 |
| 03/31/2023 | Altair Engineering Inc. | ALTR | 516,910 | 13,848 | 37,274,380,000 | 37,252,135,000 | $72,110.00 |
| 09/30/2022 | Altair Engineering Inc. | ALTR | 503,062 | -3,788 | 22,245,000 | -4,365,000 | $44.22 |
| 06/30/2022 | Altair Engineering Inc. | ALTR | 506,850 | 28,798 | 26,610,000 | -4,177,000 | $52.50 |
| 03/31/2022 | Altair Engineering Inc. | ALTR | 478,052 | -18,840 | 30,787,000 | -7,632,000 | $64.40 |
| 12/31/2021 | Altair Engineering Inc. | ALTR | 496,892 | 1,191 | 38,419,000 | 4,246,000 | $77.32 |
| 09/30/2021 | Altair Engineering Inc. | ALTR | 495,701 | 479,886 | 34,173,000 | 33,082,000 | $68.94 |
| 06/30/2021 | Altair Engineering Inc. | ALTR | 15,815 | -10,801 | 1,091,000 | -574,000 | $68.99 |
| 03/31/2021 | Altair Engineering Inc. | ALTR | 26,616 | 34 | 1,665,000 | 118,000 | $62.56 |
| 12/31/2020 | Altair Engineering Inc. | ALTR | 26,582 | -587 | 1,547,000 | 406,000 | $58.20 |
| 09/30/2020 | Altair Engineering Inc. | ALTR | 27,169 | 13 | 1,141,000 | 62,000 | $42.00 |
| 06/30/2020 | Altair Engineering Inc. | ALTR | 27,156 | -1,688 | 1,079,000 | 315,000 | $39.73 |
| 03/31/2020 | Altair Engineering Inc. | ALTR | 28,844 | -1,074 | 764,000 | -310,000 | $26.49 |
| 12/31/2019 | Altair Engineering Inc. | ALTR | 29,918 | -112 | 1,074,000 | 34,000 | $35.90 |
| 09/30/2019 | Altair Engineering Inc. | ALTR | 30,030 | 250 | 1,040,000 | -163,000 | $34.63 |
| 06/30/2019 | Altair Engineering Inc. | ALTR | 29,780 | 262 | 1,203,000 | 116,000 | $40.40 |
| 03/31/2019 | Altair Engineering Inc. | ALTR | 29,518 | -632 | 1,087,000 | 255,000 | $36.82 |
| 12/31/2018 | Altair Engineering Inc. | ALTR | 30,150 | -434 | 832,000 | -497,000 | $27.60 |
| 09/30/2018 | Altair Engineering Inc. | ALTR | 30,584 | 5,878 | 1,329,000 | 485,000 | $43.45 |
| 06/30/2018 | Altair Engineering Inc. | ALTR | 24,706 | 3,808 | 844,000 | 189,000 | $34.16 |
| 03/31/2018 | Altair Engineering Inc. | ALTR | 20,898 | -17,971 | 655,000 | -275,000 | $31.34 |
| 12/31/2017 | Altair Engineering Inc. | ALTR | 38,869 | 38,869 | 930,000 | 930,000 | $23.93 |
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