Harris Teresa A (CIK 1720317) reported 6 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-08). Recent activity: Buy ZD (7,903 shares), Buy ZD (3,610 shares), Sell ALTR (18,092 shares), Sell ALTR (450 shares), Buy ZD (593 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-08 | ZIFF DAVIS, INC. (ZD) | Director | Buy | 7,903 | $342,279 |
| 2025-05-09 | ZIFF DAVIS, INC. (ZD) | Director | Buy | 3,610 | $114,184 |
| 2025-03-26 | Altair Engineering Inc. (ALTR) | Director | Sell | 18,092 | $2.0M |
| 2025-03-06 | Altair Engineering Inc. (ALTR) | Director | Sell | 450 | $49,986 |
| 2025-02-28 | ZIFF DAVIS, INC. (ZD) | Director | Buy | 593 | $24,971 |
| 2025-02-27 | Altair Engineering Inc. (ALTR) | Director | Sell | 2,700 | $301,347 |
Source: SEC Form 4 filings · as of 2026-05-08