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Tango Therapeutics (TNGX) director receives RSU and option grants as board compensation

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Tango Therapeutics director Lee Sung received new equity awards as part of board compensation. On April 29, 2026, Sung was granted 12,300 restricted stock units, each representing one share of common stock. These RSUs vest in three equal annual installments on January 2, 2027, January 2, 2028, and January 2, 2029, contingent on continued board service.

Sung was also granted an option for 5,200 shares of common stock at an exercise price of $22.06 per share. This option vests in 36 substantially equal monthly installments over three years starting January 2, 2026, subject to continued service. Following the grants, Sung holds 22,300 shares of common stock directly and 5,200 stock options, reflecting routine non-employee director compensation rather than open-market trading.

Positive

  • None.

Negative

  • None.
Insider Lee Sung
Role null
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 5,200 $0.00 --
Grant/Award Common Stock 12,300 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 5,200 shares (Direct, null); Common Stock — 22,300 shares (Direct, null)
Footnotes (1)
  1. These shares are represented by restricted stock units (the "RSUs"). Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs will vest in three substantially equal annual installments on January 2, 2027, January 2, 2028 and January 2, 2029, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date. The RSUs were granted in connection with the Reporting Person's service on the Issuer's board of directors and reflect the value the Reporting Person is entitled to pursuant to the Issuer's Non-Employee Director Compensation Policy. This option shall vest and become exercisable in 36 substantially equal monthly installments over a period of three years commencing on January 2, 2026, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date. The options were granted in connection with the Reporting Person's service on the Issuer's board of directors and reflect the value the Reporting Person is entitled to pursuant to the Issuer's Non-Employee Director Compensation Policy.
RSUs granted 12,300 units Restricted stock units granted on April 29, 2026
Option shares granted 5,200 shares Stock option covering common stock granted April 29, 2026
Option exercise price $22.06 per share Exercise price for 5,200-share stock option
Shares after RSU grant 22,300 shares Total common stock directly held following RSU grant
RSU vesting dates January 2, 2027/2028/2029 Three equal annual RSU vesting installments
Option expiration April 29, 2036 Expiration date of the 5,200-share stock option
restricted stock units (the "RSUs") financial
"These shares are represented by restricted stock units (the "RSUs")."
Non-Employee Director Compensation Policy financial
"reflect the value the Reporting Person is entitled to pursuant to the Issuer's Non-Employee Director Compensation Policy."
Stock Option (Right to Buy) financial
"security_title": "Stock Option (Right to Buy)""
exercise price financial
"conversion_or_exercise_price": "22.0600""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"will vest in three substantially equal annual installments"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Lee Sung

(Last)(First)(Middle)
C/O TANGO THERAPEUTICS, INC.
201 BROOKLINE AVE., SUITE 901

(Street)
BOSTON MASSACHUSETTS 02215

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Tango Therapeutics, Inc. [ TNGX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/29/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/29/2026A12,300(1)A$022,300D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$22.0604/29/2026A5,200 (2)04/29/2036Common Stock5,200$05,200D
Explanation of Responses:
1. These shares are represented by restricted stock units (the "RSUs"). Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs will vest in three substantially equal annual installments on January 2, 2027, January 2, 2028 and January 2, 2029, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date. The RSUs were granted in connection with the Reporting Person's service on the Issuer's board of directors and reflect the value the Reporting Person is entitled to pursuant to the Issuer's Non-Employee Director Compensation Policy.
2. This option shall vest and become exercisable in 36 substantially equal monthly installments over a period of three years commencing on January 2, 2026, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date. The options were granted in connection with the Reporting Person's service on the Issuer's board of directors and reflect the value the Reporting Person is entitled to pursuant to the Issuer's Non-Employee Director Compensation Policy.
/s/ Julie Fogarty, as attorney-in-fact05/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What equity awards did Tango Therapeutics (TNGX) director Lee Sung receive?

Lee Sung received 12,300 restricted stock units and a stock option for 5,200 shares at $22.06 per share. Both awards are tied to Sung’s continued service on Tango Therapeutics’ board under the company’s Non-Employee Director Compensation Policy.

How do Lee Sung’s 12,300 RSUs at Tango Therapeutics (TNGX) vest?

The 12,300 RSUs vest in three substantially equal annual installments on January 2, 2027, January 2, 2028 and January 2, 2029. Each unit converts into one share of common stock, provided Sung remains in continuous service with Tango Therapeutics through each vesting date.

What are the terms of Lee Sung’s 5,200 Tango Therapeutics (TNGX) stock options?

The stock option covers 5,200 shares of common stock at a $22.06 exercise price. It vests in 36 substantially equal monthly installments over three years beginning January 2, 2026, conditioned on Sung’s continued service on Tango Therapeutics’ board of directors.

Is Lee Sung’s Form 4 transaction at Tango Therapeutics (TNGX) a market buy or sell?

The filing reports compensation-related awards, not market trades. Lee Sung acquired 12,300 RSUs and an option for 5,200 shares as grants for board service, with no cash paid and no open-market purchase or sale activity reported in this Form 4.

How many Tango Therapeutics (TNGX) shares does Lee Sung hold after these grants?

After the reported transactions, Lee Sung directly holds 22,300 shares of Tango Therapeutics common stock. In addition, Sung holds a stock option for 5,200 underlying shares, which may become exercisable over time as the option vests monthly through the three-year schedule.

Why did Tango Therapeutics (TNGX) grant RSUs and options to director Lee Sung?

The RSUs and options were granted in connection with Sung’s service on Tango Therapeutics’ board. The awards reflect the value Sung is entitled to under the company’s Non-Employee Director Compensation Policy, aligning director compensation with long-term shareholder interests through equity.