Abraham Ceesay - 10 Aug 2026 Form 4 Insider Report for Rapport Therapeutics, Inc. (RAPP)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: RAPP
Reported as of: 10 Aug 2026
Net transaction value: -$2,433,176
SEC form: 4
Accepted by SEC: 12 Aug 2026, 16:35:43 UTC
Prior SEC filing: 29 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Troy Ignelzi, Attorney-in-Fact

Key filing fact

Abraham Ceesay filed Form 4 for Rapport Therapeutics, Inc. (RAPP) on 12 Aug 2026.

Key facts

This page summarizes Abraham Ceesay's Form 4 filing for Rapport Therapeutics, Inc. (RAPP).
5 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 12 Aug 2026, 16:35.

Change

Previous filing in this sequence was filed on 29 Jul 2026.
Current net transaction value: -$2,433,176.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001722140 Primary reporting owner

Ceesay Abraham

Relationship: Chief Executive Officer, Director
Address: RAPPORT THERAPEUTICS, INC., 99 HIGH STREET, SUITE 2100, BOSTON
Signature: /s/ Troy Ignelzi, Attorney-in-Fact
Signature date: 12 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

RAPP transaction

Common Stock

Sale

Transaction value: $651,492
Shares: -14,171
Change %: -2.6%
Price: $45.97
Shares after: 523,436
Date: 10 Aug 2026
Ownership: Direct
Footnotes: F1, F2

RAPP transaction

Common Stock

Sale

Transaction value: $391,280
Shares: -8,370
Change %: -1.6%
Price: $46.75
Shares after: 515,066
Date: 10 Aug 2026
Ownership: Direct
Footnotes: F1, F3

RAPP transaction

Common Stock

Sale

Transaction value: $171,837
Shares: -3,664
Change %: -0.71%
Price: $46.90
Shares after: 511,402
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1, F4

RAPP transaction

Common Stock

Sale

Transaction value: $936,846
Shares: -19,500
Change %: -3.8%
Price: $48.04
Shares after: 491,902
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1, F5

RAPP transaction

Common Stock

Sale

Transaction value: $281,721
Shares: -5,794
Change %: -1.2%
Price: $48.62
Shares after: 486,108
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1, F6

RAPP holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 81,729
Date: 10 Aug 2026
Ownership: By Ceesay Family Irrevocable Trust

RAPP holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 20,729
Date: 10 Aug 2026
Ownership: By Dorothy Ceesay Irrevocable Trust

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 6 footnotes

Footnote F1

These transactions were effected by the Reporting Person pursuant to Rule 10b5-1 trading plans adopted on March 27, 2026.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.37 to $46.36, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Footnote F3

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $46.38 to $47.01, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Footnote F4

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $46.32 to $47.29, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Footnote F5

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $47.45 to $48.43, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Footnote F6

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $48.45 to $48.87, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.