SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Braslyn Ltd. (Last) (First) (Middle) CAY HOUSE, EP TAYLOR DRIVE (Street) LYFORD CAY, NEW PROVIDENCE C5 N7776 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 08/10/2021	3. Issuer Name and Ticker or Trading Symbol Tango Therapeutics, Inc. [ TNGX ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	26,961	D(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* Braslyn Ltd. (Last) (First) (Middle) CAY HOUSE, EP TAYLOR DRIVE (Street) LYFORD CAY, NEW PROVIDENCE C5 N7776 (City) (State) (Zip)

1. Name and Address of Reporting Person* LEWIS JOSEPH (Last) (First) (Middle) CAY HOUSE, EP TAYLOR DRIVE N7776, LYFORD CAY (Street) NEW PROVIDENCE C5 (City) (State) (Zip)

Explanation of Responses:

1. These securities are owned directly by Braslyn Ltd. ("Braslyn"), which may be deemed to be a member of a "group" for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, consisting of (i) Braslyn, (ii) Boxer Capital, LLC, (iii) Boxer Asset Management Inc. ("Boxer Management"), (iv) Joseph C. Lewis, (v) BCTG Holdings, LLC, (vi) MVA Investors, LLC and (vii) Aaron I. Davis (collectively, the "Boxer Group"), and indirectly by Joseph C. Lewis who is the sole indirect beneficial owner of and controls Braslyn. Each member of the Boxer Group other than Braslyn disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.

Remarks:

	Braslyn Ltd., By: /s/ Jason Callender, Jason Callender, Director	01/04/2022
	/s/ Joseph C. Lewis, Joseph C. Lewis	01/04/2022
	** Signature of Reporting Person	Date
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 5 (b)(v).
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