Rapport Therapeutics, Inc.
Ownership
Ownership Structure
Who owns Rapport Therapeutics, Inc. (RAPP)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 67.5% of the shares are freely tradable; institutional investors hold 109.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.94 | 7,168,939 | +0.8 | 03/31/2026 |
| TRV GP V, LLC | 13.09 | 6,280,525 | -12.0 | 06/30/2026 |
| ARCH VENTURE CORP | 7.77 | 3,728,738 | +0.0 | 06/30/2026 |
| Cormorant Asset Management, LLC | 6.16 | 2,957,521 | -2.3 | 03/31/2026 |
| The Goldman Sachs Group Inc | 6.13 | 2,942,251 | -2.0 | 03/31/2026 |
| Capital Research & Mgmt Co - Division 3 | 6.09 | 2,921,958 | -5.7 | 06/30/2026 |
| BlackRock Inc | 5.22 | 2,505,955 | +3.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Funds SMALLCAP World A | 7.04 | 3,379,608 | -7.0 | 06/30/2026 |
| Fidelity Growth Compy Commingled Pl S | 6.67 | 3,201,152 | +0.0 | 07/31/2026 |
| Fidelity Growth Company Fund | 4.69 | 2,249,488 | +0.0 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Ceesay Abraham | Chief Executive Officer | 458,977 | 18,588,569 $ | Sep 8, 2026 | direct |
| Yeleswaram Krishnaswamy | Chief Development Officer | 195,862 | 7,932,411 $ | Aug 25, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 1,069 | 46.01 | 49,190 |
| Sep 8, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 7,141 | 45.56 | 325,308 |
| Aug 25, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 18,921 | 49.57 | 937,957 |
| Aug 25, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell | 16,201 | 51.06 | 827,184 |
| Aug 25, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell | 20,799 | 50.31 | 1,046,421 |
| Aug 24, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell | 13,160 | 50.00 | 657,978 |
| Aug 19, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell | 404 | 49.90 | 20,160 |
| Aug 11, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 5,794 | 48.62 | 281,721 |
| Aug 11, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 19,500 | 48.04 | 936,846 |
| Aug 11, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 3,664 | 46.90 | 171,837 |
| Aug 10, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 8,370 | 46.75 | 391,280 |
| Aug 10, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 14,171 | 45.97 | 651,492 |
| Jul 27, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 7 | 42.74 | 299 |
| Jul 27, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 2,203 | 42.11 | 92,762 |
| Jul 14, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 2,729 | 40.57 | 110,722 |
| Jul 14, 2026 | Ceesay Abraham | Chief Executive Officer | Sell | 5,481 | 39.72 | 217,715 |
| Apr 17, 2026 | Krishnaswamy Yeleswaram | Insider | Sell | 20,225 | 39.99 | 808,798 |
| Apr 17, 2026 | Rock Ventures V L.P. Third | Major Shareholder | Sell | 426,005 | 40.32 | 17,176,522 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.