Greiner Christopher E (CIK 1631087) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-22). Recent activity: Sell ZETA (633,060 shares), Sell ZETA (515,627 shares), Sell ZETA (1.1M shares), Buy ZETA (1.0M shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | Zeta Global Holdings Corp. (ZETA) | Chief Financial Officer | Sell | 633,060 | $0 |
| 2025-12-05 | Zeta Global Holdings Corp. (ZETA) | Chief Financial Officer | Sell | 515,627 | $0 |
| 2025-05-09 | Zeta Global Holdings Corp. (ZETA) | Chief Financial Officer | Sell | 1.1M | $0 |
| 2025-02-14 | Zeta Global Holdings Corp. (ZETA) | Chief Financial Officer | Buy | 1.0M | $0 |
Source: SEC Form 4 filings · as of 2026-05-22