IMPP's three largest insider shareholders as of September 29, 2026 are Harry Vafias (Ceo And President, 3.80Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Harry Vafias | Ceo And President | 3,801,008 | 0 | 3,801,008 | 100.0% | 21 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 21 Aug, 2026 | Harry Vafias | Ceo And President | Acquired M | 149,502 | $3.01 | $450.00K | 3,801,008 | Direct |
| 21 Aug, 2026 | Harry Vafias | Ceo And President | Disposed M | 149,502 | $0.00 | $0 | 149,501 | Direct |
| 22 Jun, 2026 | Harry Vafias | Ceo And President | Acquired A | 440,000 | $0.00 | $0 | 3,617,879 | Direct |
| 22 Jun, 2026 | Harry Vafias | Ceo And President | Acquired G | 33,627 | $0.00 | $0 | 3,651,506 | Direct |
| 22 Jun, 2026 | Harry Vafias | Ceo And President | Acquired A | 299,000 | $0.00 | $0 | 299,000 | Direct |