Relay Therapeutics officer proposes $1.81M share sale

The notice also lists 219,141,631 common shares outstanding, providing the share-count context for the proposed transaction.

Rhea-AI Filing Summary

Relay Therapeutics, Inc. (RLAY) officer Thomas Catinazzo’s Rule 144 notice covers a proposed sale of 93,153 common shares, with an aggregate market value of $1,806,236.67 and an approximate sale date of October 6, 2026. Morgan Stanley Smith Barney LLC is listed as the broker. The shares were acquired upon vesting of restricted and performance stock units from January 29, 2025 through January 26, 2026. The past-three-month sales history lists 17,717 shares on September 8, 2026, valued at $335,593.64, and 17,717 shares on August 14, 2026, valued at $349,652.08; both are identified as 10b5-1 sales. It also lists 1,459 shares on July 28, 2026, valued at $27,151.99.

Key Figures

Proposed sale: 93,153 common shares Aggregate market value: $1,806,236.67 Common shares outstanding: 219,141,631 shares +3 more

6 metrics

Proposed sale 93,153 common shares Approximate sale date October 6, 2026

Aggregate market value $1,806,236.67 Proposed sale

Common shares outstanding 219,141,631 shares As listed in the notice

Past sale 17,717 shares; $335,593.64 September 8, 2026; identified as a 10b5-1 sale

Past sale 17,717 shares; $349,652.08 August 14, 2026; identified as a 10b5-1 sale

Past sale 1,459 shares; $27,151.99 July 28, 2026

Key Terms

Rule 144, Restricted and Performance Stock Units, 10b5-1 Sales

3 terms

Rule 144 regulatory

"Rule 144 notice covers a proposed sale"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted and Performance Stock Units financial

"acquired upon the vesting of restricted and performance stock units"

10b5-1 Sales regulatory

"10b5-1 Sales for Thomas J. Catinazzo"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

FAQ

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

How many RLAY shares did Thomas Catinazzo propose to sell?

Thomas Catinazzo’s notice covers a proposed sale of 93,153 common shares, with an aggregate market value of $1,806,236.67 and an approximate sale date of October 6, 2026.

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

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Available on EDGAR 10/06/2026 - 04:22 PM Accepted by SEC EDGAR 10/06/2026 - 04:21 PM 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	0001818261
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	RELAY THERAPEUTICS INC
SEC File Number	001-39385
Address of Issuer	60 Hampshire Street Cambridge MASSACHUSETTS 02139
Phone	617-370-8837
Name of Person for Whose Account the Securities are To Be Sold	THOMAS CATINAZZO
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	93153	1806236.67	219141631	10/06/2026	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	01/29/2025	Restricted and Performance Stock Units	Issuer			93153	01/29/2025	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 THOMAS J CATINAZZO 60 Hampshire Street Cambridge MA 02139	Common	09/08/2026	17717	335593.64
10b5-1 Sales for THOMAS J CATINAZZO 60 Hampshire Street Cambridge MA 02139	Common	08/14/2026	17717	349652.08
THOMAS J CATINAZZO 60 Hampshire Street Cambridge MA 02139	Common	07/28/2026	1459	27151.99

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted and performance stock units during the period of 01/29/2025 through 01/26/2026.
Date of Notice	10/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	10/30/2025
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/ Thomas Catinazzo
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)