Daniella Beckman proposes sale of 1.79M TNGX shares

TNGX submitted a Form 144 notice for proposed sales of Common Stock effective 06/11/2026.

Rhea-AI Filing Summary

TNGX submitted a Form 144 notice for proposed sales of Common Stock effective 06/11/2026. The filing lists a $51,523,582.08 figure and multiple lots: 1,791,726 shares (entry), 1,625,739 shares tied to a stock option exercise with a 06/11/2026 date, and 165,987 shares described as restricted stock from 04/01/2017. The excerpt also discloses a reported sale by Daniella Beckman of 4,446 shares on 06/10/2026 for $133,380.00.

The filing names Morgan Stanley Smith Barney LLC as broker and indicates NASDAQ as the market. This Form 144 notifies the SEC and provides holder/sale details; it does not itself execute transfers.

Insights

Securities Lawyer

Form 144 lists proposed resale quantities and a recent small disposal by an affiliated holder.

The notice identifies multiple share lots including 1,625,739 shares tied to a stock option exercise dated 06/11/2026 and 165,987 shares classified as restricted stock from 04/01/2017. It also shows a sale of 4,446 shares by Daniella Beckman on 06/10/2026 for $133,380.00.

Form 144 is a notice of intent to sell under Rule 144 and does not confirm completion. Subsequent public trade reports or broker confirmations would show whether the proposed resales occurred.

Key Figures

Form effective date: 06/11/2026 Broker: Morgan Stanley Smith Barney LLC Entry figure: 1,791,726 shares +5 more

8 metrics

Form effective date 06/11/2026 effective date listed for proposed resales

Broker Morgan Stanley Smith Barney LLC broker/dealer listed on the filing

Entry figure 1,791,726 shares listed in the Securities Information section

Option-exercise lot 1,625,739 shares stock option exercise dated 06/11/2026

Restricted stock lot 165,987 shares restricted stock with grant date 04/01/2017

Reported sale (holder) 4,446 shares sale by Daniella Beckman on 06/10/2026

Proceeds reported $133,380.00 consideration for the 4,446-share sale

Monetary figure $51,523,582.08 numeric figure included in the Securities Information section

Key Terms

Form 144, restricted stock, stock option exercise, broker/dealer

4 terms

Form 144 regulatory

"Form 144 notice for proposed sales of Common Stock effective 06/11/2026"

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.

restricted stock financial

"Restricted Stock | Issuer | 04/01/2017 | 165,987"

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.

stock option exercise financial

"Stock Option Exercise | Issuer | 06/11/2026 | 1,625,739"

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.

broker/dealer regulatory

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

A broker/dealer is a firm or person that both carries out trades for clients (broker) and buys or sells securities from its own inventory (dealer). Think of it as a shop that can take customer orders and also sell items off its own shelves. Investors care because broker/dealers connect buyers and sellers, influence the price and speed of trades, hold securities or cash for short periods, and can create conflicts of interest that affect trade cost and reliability.

FAQ

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

What does TNGX's Form 144 filed 06/11/2026 indicate?

It notifies the SEC of proposed resales of Common Stock effective 06/11/2026. The filing lists multiple lots including 1,625,739 shares tied to a stock option exercise and 165,987 restricted shares from 04/01/2017.

Who is the broker listed on the TNGX Form 144?

Morgan Stanley Smith Barney LLC is named as the broker. The filing also references NASDAQ as the market and includes a reported sale executed through that brokerage relationship.

Did any holder sell shares recently according to the excerpt?

Yes. Daniella Beckman reported a sale of 4,446 shares on 06/10/2026 for $133,380.00. The Form 144 separately lists proposed resale lots dated 06/11/2026.

Does Form 144 mean the shares have been transferred?

No. Form 144 is a notice of intent to sell under Rule 144 and does not confirm completion of sales. Execution would be reported in trade records or subsequent disclosures.

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

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Accepted by SEC EDGAR 06/11/2026 - 06:00 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	1791726	51523582.08	144647982	06/11/2026	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	06/11/2026	Stock Option Exercise	Issuer			1625739	06/11/2026	Cash
Common	04/01/2017	Restricted Stock	Issuer			165987	04/01/2017	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
DANIELLA BECKMAN 201 Brookline Ave., Suite 901 Boston, MA 02215	Common	06/10/2026	4446	133380.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock during the period of 04/01/2017 through 05/07/2026.
Date of Notice	06/11/2026
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)