As of September 29, 2026, Rapport Therapeutics's top three insider holders are Rock Ventures V, L.P. Third (TenPercentOwner, 6.28Mn shares), Venture Partners Xii, Llc Arch (TenPercentOwner, 3.73Mn shares), James Healy (Director, 1.88Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Rock Ventures V, L.P. Third | TenPercentOwner | 6,280,525 | 0 | 6,280,525 | 55.1% | 28 May, 2026 |
| 2 | Venture Partners Xii, Llc Arch | TenPercentOwner | 0 | 3,728,738 | 3,728,738 | 32.7% | 10 Jun, 2024 |
| 3 | Abraham Ceesay | Chief Executive Officer | 456,767 | 0 | 456,767 | 4.0% | 24 Sep, 2026 |
| 4 | David Bredt | Chief Scientific Officer | 393,075 | 0 | 393,075 | 3.4% | 19 Feb, 2026 |
| 5 | Krishnaswamy Yeleswaram | Chief Development Officer | 195,862 | 0 | 195,862 | 1.7% | 26 Aug, 2026 |
| 6 | Cheryl Gault | Chief Operating Officer | 149,914 | 0 | 149,914 | 1.3% | 01 Jul, 2026 |
| 7 | James Healy | Director | 0 | 113,626 | 113,626 | 1.0% | 03 Jul, 2024 |
| 8 | Steven M Paul | Director | 0 | 41,666 | 41,666 | 0.4% | 15 Sep, 2025 |
| 9 | Reid M Huber | Director | 20,400 | 0 | 20,400 | 0.2% | 15 Sep, 2025 |
| 10 | Troy A. Ignelzi | Chief Financial Officer | 10,000 | 0 | 10,000 | 0.1% | 13 Mar, 2025 |
| 11 | Wendy B. Young | Director | 9,500 | 0 | 9,500 | 0.1% | 11 Sep, 2025 |
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 |
|---|---|---|---|---|---|---|---|---|
| 23 Sep, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 1,952 | $39.05 | $76.23K | 457,025 | Direct |
| 23 Sep, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 215 | $39.86 | $8.57K | 456,810 | Direct |
| 23 Sep, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 43 | $41.05 | $1.77K | 456,767 | Direct |
| 08 Sep, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 7,141 | $45.56 | $325.31K | 460,046 | Direct |
| 08 Sep, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 1,069 | $46.01 | $49.19K | 458,977 | Direct |
| 25 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 18,921 | $49.57 | $937.96K | 467,187 | Direct |
| 24 Aug, 2026 | Krishnaswamy Yeleswaram | Chief Development Officer | Disposed S | 13,160 | $50.00 | $657.98K | 232,862 | Direct |
| 25 Aug, 2026 | Krishnaswamy Yeleswaram | Chief Development Officer | Disposed S | 20,799 | $50.31 | $1.05Mn | 212,063 | Direct |
| 25 Aug, 2026 | Krishnaswamy Yeleswaram | Chief Development Officer | Disposed S | 16,201 | $51.06 | $827.18K | 195,862 | Direct |
| 19 Aug, 2026 | Krishnaswamy Yeleswaram | Chief Development Officer | Disposed S | 404 | $49.90 | $20.16K | 246,022 | Direct |
| 10 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 14,171 | $45.97 | $651.49K | 523,436 | Direct |
| 10 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 8,370 | $46.75 | $391.28K | 515,066 | Direct |
| 11 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 3,664 | $46.90 | $171.84K | 511,402 | Direct |
| 11 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 19,500 | $48.04 | $936.85K | 491,902 | Direct |
| 11 Aug, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 5,794 | $48.62 | $281.72K | 486,108 | Direct |
| 27 Jul, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 2,203 | $42.11 | $92.76K | 537,614 | Direct |
| 27 Jul, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 7 | $42.74 | $299 | 537,607 | Direct |
| 14 Jul, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 5,481 | $39.72 | $217.71K | 542,546 | Direct |
| 14 Jul, 2026 | Abraham Ceesay | Chief Executive Officer | Disposed S | 2,729 | $40.57 | $110.72K | 539,817 | Direct |
| 30 Jun, 2026 | Cheryl Gault | Chief Operating Officer | Disposed S | 1,900 | $40.09 | $76.17K | 158,014 | Direct |