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Rapport Therapeutics (RAPP) CEO sells 8,210 shares under 10b5-1 plan

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Rapport Therapeutics, Inc. Chief Executive Officer Abraham Ceesay reported open-market sales of 8,210 shares of common stock on July 14, 2026, in two transactions at weighted-average prices of $40.57 and $39.72, executed under Rule 10b5-1 trading plans adopted on March 27, 2026. Following these sales, he holds 542,546 shares directly. Additional shares are held in two irrevocable trusts (20,729 and 81,729 shares), for which he disclaims beneficial ownership except to the extent of any pecuniary interest.

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Insider Ceesay Abraham
Role Chief Executive Officer
Sold 8,210 shs ($328K)
Type Security Shares Price Value
Sale Common Stock 5,481 $39.7217 $218K
Sale Common Stock 2,729 $40.5724 $111K
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 542,546 shares (Direct); Common Stock — 81,729 shares (Indirect, By Ceesay Family Irrevocable Trust)
Footnotes (1)
  1. These transactions were effected by the Reporting Person pursuant to Rule 10b5-1 trading plans adopted on March 27, 2026. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $39.36 to $40.35, 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $40.37 to $40.73, 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. Shares held by The Ceesay Family Irrevocable Trust u/t/d March 27, 2024. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that he is a beneficial owner of such shares for the purpose of Section 16 of the Exchange Act, or for any other purpose. Shares held by The Dorothy Ceesay Irrevocable Trust u/d/t dated March 27, 2024. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that he is a beneficial owner of such shares for the purpose of Section 16 of the Exchange Act, or for any other purpose.
Total shares sold 8,210 shares Aggregate common shares sold by CEO on July 14, 2026
First transaction size and price 2,729 shares at $40.5724 Open-market sale of common stock on July 14, 2026
Second transaction size and price 5,481 shares at $39.7217 Open-market sale of common stock on July 14, 2026
Direct holdings after sale 542,546 shares Common stock held directly by CEO following transactions
Dorothy Ceesay Irrevocable Trust holdings 20,729 shares Indirect holdings via Dorothy Ceesay Irrevocable Trust
Ceesay Family Irrevocable Trust holdings 81,729 shares Indirect holdings via Ceesay Family Irrevocable Trust
Price range first weighted average $39.36–$40.35 Range of prices for trades included in first weighted-average sale
Price range second weighted average $40.37–$40.73 Range of prices for trades included in second weighted-average sale
Rule 10b5-1 trading plans regulatory
"These transactions were effected by the Reporting Person pursuant to Rule 10b5-1 trading plans"
Rule 10b5-1 trading plans are written, pre-arranged instructions that allow company insiders (such as executives or directors) to automatically buy or sell their company's stock at specified times or under set conditions, like a standing instruction or automated thermostat for trades. They matter to investors because these plans provide a legal defense against insider‑trading accusations and create predictable insider trading patterns that can help signal whether sales are routine portfolio management or potentially meaningful to the company’s outlook.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
irrevocable trust financial
"Shares held by The Ceesay Family Irrevocable Trust u/t/d March 27, 2024"
An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.
beneficial ownership regulatory
"The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
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FAQ

What insider transaction did Rapport Therapeutics (RAPP) report for CEO Abraham Ceesay?

Abraham Ceesay reported selling 8,210 shares of Rapport Therapeutics common stock on July 14, 2026 in two open-market transactions, while retaining a substantial direct stake plus additional shares held in related irrevocable trusts.

At what prices did the Rapport Therapeutics (RAPP) CEO sell shares?

The CEO sold shares at weighted-average prices of $40.5724 for 2,729 shares and $39.7217 for 5,481 shares. Footnotes state these were executed in multiple trades within price ranges of $39.36–$40.35 and $40.37–$40.73, respectively.

How many Rapport Therapeutics (RAPP) shares does the CEO hold after the reported sale?

After the reported transactions, Abraham Ceesay holds 542,546 shares of Rapport Therapeutics common stock directly. Separate irrevocable trusts associated with him hold 20,729 and 81,729 shares, for which he disclaims beneficial ownership except for any pecuniary interest.

Were the Rapport Therapeutics (RAPP) CEO’s share sales under a Rule 10b5-1 plan?

Yes. Footnotes state the transactions were effected pursuant to Rule 10b5-1 trading plans adopted on March 27, 2026. Such pre-arranged plans systematically schedule trades, reducing the significance of the precise timing of these sales as an informational signal.

What is the role of irrevocable trusts in the Rapport Therapeutics (RAPP) Form 4?

Two irrevocable trusts hold 20,729 and 81,729 shares of Rapport Therapeutics common stock. The CEO reports these as indirect holdings and expressly disclaims beneficial ownership for Section 16 purposes except to the extent of any pecuniary interest.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Ceesay Abraham

(Last)(First)(Middle)
RAPPORT THERAPEUTICS, INC.
99 HIGH STREET, SUITE 2100

(Street)
BOSTON MASSACHUSETTS 02110

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Rapport Therapeutics, Inc. [ RAPP ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/14/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/14/2026S(1)5,481D$39.7217(2)542,546D
Common Stock07/14/2026S(1)2,729D$40.5724(3)539,817D
Common Stock81,729IBy Ceesay Family Irrevocable Trust(4)
Common Stock20,729IBy Dorothy Ceesay Irrevocable Trust(5)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. These transactions were effected by the Reporting Person pursuant to Rule 10b5-1 trading plans adopted on March 27, 2026.
2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $39.36 to $40.35, 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.
3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $40.37 to $40.73, 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.
4. Shares held by The Ceesay Family Irrevocable Trust u/t/d March 27, 2024. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that he is a beneficial owner of such shares for the purpose of Section 16 of the Exchange Act, or for any other purpose.
5. Shares held by The Dorothy Ceesay Irrevocable Trust u/d/t dated March 27, 2024. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that he is a beneficial owner of such shares for the purpose of Section 16 of the Exchange Act, or for any other purpose.
/s/ Troy Ignelzi, Attorney-in-Fact07/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)