Form 144: 10b5-1 Sales Reported for RAPP

Morgan Stanley Smith Barney LLC filed a Form 144 notice relating to the proposed sale of Common shares connected with an affiliate account.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC filed a Form 144 notice relating to the proposed sale of Common shares connected with an affiliate account. The filing lists three 10b5-1 sales by KRISHNASWAMY: 10,115 shares on 03/25/2026, 360 shares on 04/08/2026, and 500 shares on 04/10/2026, with dollar amounts shown alongside each transaction. The cover block includes a figure of 47,792,943 shares as of 04/13/2026.

Key Figures

Largest 10b5-1 sale: 10,115 shares Additional 10b5-1 sales: 360 shares; 500 shares Reported proceeds (largest line): $303,354.24 +1 more

4 metrics

Largest 10b5-1 sale 10,115 shares sale on 03/25/2026

Additional 10b5-1 sales 360 shares; 500 shares sales on 04/08/2026 and 04/10/2026

Reported proceeds (largest line) $303,354.24 associated with 10,115-share sale on 03/25/2026

Shares shown in header 47,792,943 shares as of 04/13/2026

Key Terms

10b5-1, Form 144, Founders Shares

3 terms

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.

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.

Founders Shares market

"Common | 07/20/2025 | 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 about insider sales?

The Form 144 lists proposed sales of Common shares by an affiliate under a 10b5-1 plan. It records three transactions of 10,115, 360, and 500 shares on 03/25/2026, 04/08/2026, and 04/10/2026 respectively.

Who is the selling party named in the RAPP Form 144?

The sales are reported for KRISHNASWAMY with Morgan Stanley Smith Barney LLC listed as the broker-dealer. The filing shows the broker address and identifies the transactions as 10b5-1 sales by that party.

How many shares were sold in the largest reported 10b5-1 trade on this filing?

The largest single reported 10b5-1 sale in the excerpt is 10,115 shares on 03/25/2026. Dollar proceeds shown for that line are $303,354.24 as reported in the filing excerpt.

Does the filing show total shares outstanding for RAPP?

The cover block includes a figure of 47,792,943 shares as of 04/13/2026. This number appears in the filing header area and is presented with that date in the excerpt.

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

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Accepted by SEC EDGAR 04/13/2026 - 04:37 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	19365	661702.05	47792943	04/13/2026	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	07/20/2025	Founders Shares	Issuer			19365	07/20/2025	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	04/10/2026	500	17490.00
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 acquired upon the vesting of founders shares during the period of 07/20/2025 through 10/20/2025.
Date of Notice	04/13/2026
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)