RLAY (RLAY) filer Sekar Kathiresan plans 30,000-share sale after option exercise

Rhea-AI Filing Summary

RLAY reporting person Sekar Kathiresan filed to sell common stock. The planned transaction covers 30,000 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on or about July 31, 2026 on NASDAQ, with an indicated value of $563,553.00.

The filing also lists prior sales within three months: 30,000 shares of common stock on July 21, 2026 for $594,414.00, and 66,055 shares on July 20, 2026 for $1,293,555.07. The planned sale is linked to a stock option exercise settled in cash.

Key Figures

Planned shares to be sold: 30,000 shares Planned sale value: $563,553.00 Recent sale 1 shares: 30,000 shares +4 more

7 metrics

Planned shares to be sold 30,000 shares Common stock planned for sale on or about July 31, 2026

Planned sale value $563,553.00 Aggregate value indicated for 30,000 shares of common stock

Recent sale 1 shares 30,000 shares Common stock sold on July 21, 2026

Recent sale 1 proceeds $594,414.00 Value for 30,000 shares sold on July 21, 2026

Recent sale 2 shares 66,055 shares Common stock sold on July 20, 2026

Recent sale 2 proceeds $1,293,555.07 Value for 66,055 shares sold on July 20, 2026

Planned sale date 07/31/2026 Stated date for planned sale of 30,000 shares on NASDAQ

Key Terms

Form 144, Stock Option Exercise, Executive Financial Services, aggregate value

4 terms

Form 144 regulatory

" 144: Securities Information Common | Morgan Stanley Smith Barney"

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.

Stock Option Exercise financial

"Common | 07/31/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York"

aggregate value financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

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

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Available on EDGAR 07/31/2026 - 04:06 PM Accepted by SEC EDGAR 07/31/2026 - 04:05 PM Learn about SEC filing dates

FAQ

What planned stock sale did RLAY filer Sekar Kathiresan disclose?

Sekar Kathiresan plans to sell 30,000 shares of RLAY common stock around July 31, 2026 on NASDAQ through Morgan Stanley Smith Barney LLC Executive Financial Services, with an indicated aggregate value of $563,553.00 in this Form 144 notice.

What recent RLAY stock sales are reported for Sekar Kathiresan in this Form 144?

The filing lists two recent RLAY common stock sales: 30,000 shares on July 21, 2026 for $594,414.00, and 66,055 shares on July 20, 2026 for $1,293,555.07, both attributed to Sekar Kathiresan.

What type of transaction is associated with the planned RLAY share sale?

The planned sale of 30,000 RLAY common shares on or about July 31, 2026 is associated with a Stock Option Exercise, with the acquisition from the issuer and settlement indicated as Cash in the Form 144 details.

Through which broker will the planned RLAY share sale be executed?

The planned sale of 30,000 RLAY common shares around July 31, 2026 is designated to be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

On which exchange is the planned RLAY stock sale expected to occur?

The Form 144 indicates the planned sale of 30,000 RLAY common shares on or about July 31, 2026 is expected to occur on the NASDAQ market, using Morgan Stanley Smith Barney LLC Executive Financial Services as the broker.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	30000	563553.00	191586165	07/31/2026	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	07/31/2026	Stock Option Exercise	Issuer			30000	07/31/2026	Cash

* 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
SEKAR KATHIRESAN 60 Hampshire Street Cambridge MA 02139	Common	07/21/2026	30000	594414.00
SEKAR KATHIRESAN 60 Hampshire Street Cambridge MA 02139	Common	07/20/2026	66055	1293555.07

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)