Rapport Therapeutics, Inc.
RAPP- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002012593
In the last 90 days, Rapport Therapeutics, Inc. insiders filed 7 open-market purchases and 8 sales; 160 institutions reported holding it in 13F filings for Q2 2026, worth $2.13B in total; no superinvestor holds it.
Holders of 5% or more of RAPP
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Rapport Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Third Rock Ventures V, L.P. | 13G/A | 13.10%6.28M shares | −6.40 ppfrom 19.50% | Feb 13, 20252 filings | Aug 14, 2026 | SEC |
| Capital International Investors | 13G/A | 6.10%2.92M shares | – | Nov 13, 20242 filings | Aug 12, 2026 | SEC |
| Cormorant Asset Management, LP | 13G/A | 5.56%2.66M shares | −0.63 ppfrom 6.19% | Jun 20, 20246 filings | Aug 14, 2026 | SEC |
| BlackRock, Inc. | 13G | 5.03%2.40M shares | New | Jan 21, 20261 filing | Jan 21, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
20 Schedule 13D and 13G filings on Rapport Therapeutics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20264:15 PM ET | Third Rock Ventures V, L.P.and 5 others | 13G/A | 13.10%6.28M shares | −6.40 ppfrom 19.50% | Jun 30, 2026 | SEC |
| Aug 14, 20262:05 PM ET | Cormorant Asset Management, LPand 1 other | 13G/A | 5.56%2.66M shares | −0.63 ppfrom 6.19% | Jun 30, 2026 | SEC |
| Aug 12, 202610:28 AM ET | Capital International Investors | 13G/A | 6.10%2.92M shares | – | Jun 30, 2026 | SEC |
| May 15, 20261:28 PM ET | Cormorant Asset Management, LPand 1 other | 13G/A | 6.19%2.96M shares | −0.16 ppfrom 6.35% | Mar 31, 2026 | SEC |
| Feb 17, 20263:02 PM ET | Cormorant Asset Management, LPand 1 other | 13G/A | 6.35%3.03M shares | −0.35 ppfrom 6.70% | Dec 31, 2025 | SEC |
| Jan 21, 202612:30 PM ET | BlackRock, Inc. | 13G | 5.03%2.40M shares | New | Dec 31, 2025 | SEC |
| Nov 14, 20251:09 PM ET | Cormorant Asset Management, LPand 1 other | 13G/A | 6.70%3.19M shares | – | Sep 30, 2025 | SEC |
| Oct 22, 20255:09 PM ET | Johnson & Johnsonand 1 other | 13G/A | 4.90%1.78M shares | –Below 5% | Sep 30, 2025 | SEC |
| Sep 18, 20255:32 PM ET | Sofinnova Venture Partners XI, L.P.and 4 others | 13D/A | 4.20%1.95M shares | –Below 5% | Sep 11, 2025 | SEC |
| Feb 13, 20254:15 PM ET | Third Rock Ventures V, L.P.and 5 others | 13G | 19.50%7.14M shares | New | Dec 31, 2024 | SEC |
| Nov 14, 2024 | Cormorant Asset Management, LP | 13G/AOld format | – | – | – | SEC |
| Nov 14, 2024 | ARCH Venture Fund XII, L.P. | 13GOld format | – | New | – | SEC |
| Nov 13, 2024 | Capital International Investors | 13GOld format | – | New | – | SEC |
| Nov 12, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Oct 18, 2024 | Johnson & Johnson | 13GOld format | – | New | – | SEC |
| Jul 10, 2024 | FMR LLC | 13GOld format | – | New | – | SEC |
| Jun 24, 20249:00 PM ET | Goldman Sachs Group Inc | 13G/AOld format | – | – | – | SEC |
| Jun 21, 20244:52 PM ET | Goldman Sachs Group Inc | 13GOld format | – | New | – | SEC |
| Jun 20, 2024 | Cormorant Asset Management, LP | 13GOld format | – | New | – | SEC |
| Jun 14, 2024 | Sofinnova Venture Partners XI, L.P. | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
30 notices from officers, directors and other affiliates planning to sell Rapport Therapeutics, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Oct 6, 20266:18 PM ET | Abraham N. CeesayOfficer | 39.5K | $1.23M | Oct 6, 202610b5-1 | Goldman Sachs & Co. LLC | SEC |
| Sep 30, 20264:20 PM ET | Cheryl GaultOfficer | 10.0K | $330.2K | Sep 30, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 25, 20264:29 PM ET | Krishnaswamy YeleswaramOfficer | 37.0K | $1.83M | Aug 25, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 24, 20264:28 PM ET | Krishnaswamy YeleswaramOfficer | 11.5K | $553.4K | Aug 24, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 19, 20264:38 PM ET | Krishnaswamy YeleswaramOfficer | 2.09K | $102.5K | Aug 19, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 30, 20264:33 PM ET | Cheryl GaultOfficer | 10.0K | $403.9K | Jun 30, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 29, 20264:45 PM ET | Abraham N. CeesayOfficer | 99.5K | $4.02M | Jun 29, 202610b5-1 | Goldman Sachs & Co. LLC | SEC |
| May 27, 20269:16 AM ET | Third Rock Ventures V, L.P.10% stockholder | 18.6K | $742.9K | May 26, 2026 | Raymond James & Associates | SEC |
| May 11, 20264:25 PM ET | Third Rock Ventures V, L.P.10% stockholder | 133.6K | $5.38M | May 11, 202610b5-1 | Raymond James & Associates | SEC |
| May 8, 20264:57 PM ET | Third Rock Ventures V, L.P.10% stockholder | 5.02K | $202.3K | May 8, 202610b5-1 | Raymond James & Associates | SEC |
| May 7, 20264:44 PM ET | Third Rock Ventures V, L.P.10% stockholder | 271.5K | $10.9M | May 7, 202610b5-1 | Raymond James & Associates, Inc. | SEC |
| Apr 17, 20264:37 PM ET | Krishnaswamy YeleswaramOfficer | 20.2K | $799.7K | Apr 17, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 17, 20264:25 PM ET | Third Rock Ventures V, L.P.10% stockholder | 426.0K | $17.2M | Apr 17, 202610b5-1 | Raymond James & Associates | SEC |
| Apr 13, 20264:37 PM ET | Krishnaswamy YeleswaramOfficer | 19.4K | $661.7K | Apr 13, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 10, 20264:34 PM ET | Krishnaswamy YeleswaramOfficer | 500 | $17.1K | Apr 10, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 8, 20265:35 PM ET | Krishnaswamy YeleswaramOfficer | 360 | $12.1K | Apr 8, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 30, 20265:31 PM ET | Cheryl GaultOfficer | 10.0K | $278.4K | Mar 30, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 25, 20264:22 PM ET | Krishnaswamy YeleswaramOfficer | 10.1K | $285.7K | Mar 25, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 5, 20265:54 PM ET | Gault CherylOfficer | 2.01K | $58.2K | Mar 5, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jan 15, 20264:28 PM ET | David BredtOfficer | 17.0K | $466.1K | Jan 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jan 2, 20268:20 PM ET | David BredtOfficer | 6.57K | $197.3K | Jan 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jan 2, 20268:17 PM ET | Krishnaswamy YeleswaramOfficer | 2.84K | $85.3K | Jan 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 17, 20254:28 PM ET | The Dorothy Ceesay Irrevocable TrustDirector · Officer | 15.2K | $469.1K | Dec 17, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 17, 20254:25 PM ET | Abraham CeesayDirector · Officer | 17.5K | $538.3K | Dec 17, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Oct 15, 20254:26 PM ET | David BredtOfficer | 25.5K | $634.4K | Oct 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the RAPP notices from the last 12 months