Insider sale notice for common stock

Issuer submitted a Form 144 notice reporting proposed sales of common stock.

Rhea-AI Filing Summary

Issuer submitted a Form 144 notice reporting proposed sales of common stock. The filing lists a stock option exercise tied to 914 shares dated 06/10/2026 and restricted stock of 3,532 shares dated 03/16/2017. The broker listed is Morgan Stanley Smith Barney LLC and an amount of $133,380.00 appears in the record.

Insights

Securities Compliance Counsel

Form 144 records proposed sale by an affiliate under Rule 144; details show share counts and broker.

The entry documents a stock option exercise for 914 shares (dated 06/10/2026) and a restricted stock line for 3,532 shares (dated 03/16/2017). Morgan Stanley Smith Barney LLC is listed as the broker/placement agent.

Regulatory treatment hinges on holding periods and transfer restrictions; the filing is a notice of intent to sell, not confirmation of completed sales. Subsequent trade confirmations or Form 4/5 filings would show completion.

Key Figures

Form date: 06/10/2026 Stock option exercise shares: 914 shares Restricted stock shares: 3,532 shares +1 more

4 metrics

Form date 06/10/2026 date associated with stock option exercise and filing lines

Stock option exercise shares 914 shares Stock Option Exercise entry dated <date>06/10/2026</date>

Restricted stock shares 3,532 shares Restricted Stock entry dated <date>03/16/2017</date>

Recorded amount $133,380.00 Monetary figure appearing in the filing record

Key Terms

Form 144, Stock Option Exercise, Restricted Stock, Morgan Stanley Smith Barney LLC

4 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.

Stock Option Exercise financial

"Common | 06/10/2026 | Stock Option Exercise"

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.

Restricted Stock financial

"Common | 03/16/2017 | Restricted Stock"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Morgan Stanley Smith Barney LLC other

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

FAQ

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

What does TNGX's Form 144 report?

It reports an intent to sell common shares under Rule 144. The notice lists a stock option exercise of 914 shares and restricted stock of 3,532 shares, with Morgan Stanley Smith Barney LLC as the broker.

Does the Form 144 confirm the shares were sold for TNGX?

No; Form 144 is an intent-to-sell notice. It documents proposed sales and related details but does not confirm execution. Completed trades would appear in subsequent trade confirmations or other SEC filings.

Who is the broker listed on the TNGX filing?

The broker shown is Morgan Stanley Smith Barney LLC, located at 1 New York Plaza. The filing ties the proposed transactions to that broker for placement or sale handling.

What monetary value appears in the filing for TNGX?

The record shows $133,380.00 as a monetary figure associated with the filing. The filing text does not elaborate further on how that amount relates to specific lots or sales.

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

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Accepted by SEC EDGAR 06/10/2026 - 04:45 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	0001513422
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	TANGO THERAPEUTICS, INC.
SEC File Number	001-39485
Address of Issuer	201 Brookline Ave., Suite 901 Boston, MASSACHUSETTS 02215
Phone	857-320-4900
Name of Person for Whose Account the Securities are To Be Sold	DANIELLA BECKMAN
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	4446	133380.00	144647982	06/10/2026	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	06/10/2026	Stock Option Exercise	Issuer			914	06/10/2026	Cash
Common	03/16/2017	Restricted Stock	Issuer			3532	03/16/2017	Not Applicable

* 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

Nothing to Report

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock during the period of 03/16/2017 through 04/01/2017.
Date of Notice	06/10/2026
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/ Daniella Giovanna Beckman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)