Form 144: Proposed sale of 500 RAPP shares

Morgan Stanley Smith Barney LLC submitted a Form 144 disclosing proposed sales of 500 shares of Common Stock by a holder and recent 10b5-1 dispositions by Krishnaswamy.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC submitted a Form 144 disclosing proposed sales of 500 shares of Common Stock by a holder and recent 10b5-1 dispositions by Krishnaswamy. The filing lists 10b5-1 sales of 360 shares for $12,564.00 (04/08/2026) and 10,115 shares for $303,354.24 (03/25/2026).

Key Figures

Proposed sale: 500 shares 10b5-1 sale (04/08/2026): 360 shares 10b5-1 sale (03/25/2026): 10,115 shares

3 metrics

Proposed sale 500 shares Founders Shares; filing date <date>04/10/2026</date>

10b5-1 sale (04/08/2026) 360 shares Proceeds reported <money>$12,564.00</money>

10b5-1 sale (03/25/2026) 10,115 shares Proceeds reported <money>$303,354.24</money>

Key Terms

Form 144, 10b5-1, Founders Shares

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 regulatory

"10b5-1 Sales for KRISHNASWAMY 99 High Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Founders Shares market

"Common | 07/09/2025 | Founders Shares"

Founders shares are a special block of a company’s stock originally given to the people who started the business; they often carry extra voting power or favorable terms compared with regular shares. For investors, these shares matter because they concentrate control and influence how future funding, ownership dilution, and decision-making will play out—think of founders shares as the steering wheel that can steer a company’s direction even as more passengers (investors) climb aboard.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 for RAPP disclose?

The Form 144 discloses a proposed sale of 500 shares and prior 10b5-1 sales by Krishnaswamy of 360 and 10,115 shares. It lists dollar amounts of those prior sales and the dates of execution.

Who executed the 10b5-1 sales reported in the RAPP Form 144?

The 10b5-1 sales were executed by Krishnaswamy. The filing shows sales dated 03/25/2026 and 04/08/2026 with the reported share counts and gross proceeds included.

How many shares and proceeds are shown for the March 25, 2026 sale in RAPP?

The March 25, 2026 entry reports 10,115 shares sold for $303,354.24. The record lists the 10b5-1 plan as the method of sale and provides the transaction date and amount.

Does the Form 144 indicate the seller or broker for the proposed 500-share sale?

The filing identifies Morgan Stanley Smith Barney LLC as the broker and lists the security as Founders Shares; the proposed sale quantity is 500 shares with the filing dated 04/10/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/10/2026 - 04:34 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002022156
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Rapport Therapeutics, Inc.
SEC File Number	001-42121
Address of Issuer	99 High Street, Suite 2100 Boston MASSACHUSETTS 02110
Phone	8573218020
Name of Person for Whose Account the Securities are To Be Sold	KRISHNASWAMY YELESWARAM
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	500	17110.00	47792943	04/10/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/09/2025	Founders Shares	Issuer			500	07/09/2025	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for KRISHNASWAMY YELESWARAM 99 High Street, Suite 2100 Boston MA 02110	Common	04/08/2026	360	12564.00
10b5-1 Sales for KRISHNASWAMY YELESWARAM 99 High Street, Suite 2100 Boston MA 02110	Common	03/25/2026	10115	303354.24

144: Remarks and Signature

Remarks	The securities to be sold were or will be acquired upon the vesting of founders shares during the period of 07/09/2025 through 8/20/2025.
Date of Notice	04/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/10/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Krishnaswamy Yeleswaram
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)