Takeda Pharmaceutical Co Ltd - Oct 6, 2021 Form 3 Insider Report for Theseus Pharmaceuticals, Inc. (THRX)

Role: 10%+ Owner
Signature: /s/ Yoshihiro Nakagawa, Corporate Officer, Global General Counsel of Takeda Pharmaceutical Company Limited
Stock symbol: THRX
Transactions as of: Oct 6, 2021
Transactions value $: $0
Form type: 3
Date filed: 10/15/2021, 06:10 PM
Previous filing: Jul 9, 2021
Next filing: Oct 15, 2021

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	THRX	Series A Preferred Stock							Oct 6, 2021	Common Stock	1.62M		See explanation	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares of the Issuers Series A Preferred Stock are expected to convert on a one-for-one basis into the number of shares of the Issuers common stock, par value $0.0001 per share (Common Stock), shown in Column 3 immediately upon the closing of the Issuers initial public offering without payment of additional consideration. The Series A Preferred Stock has no expiration date.
F2	This statement is being filed jointly by Takeda Pharmaceutical Company Limited and ARIAD Pharmaceuticals, Inc.
F3	Takeda Pharmaceutical Company Limiteds beneficial ownership of the reported securities is comprised of 1,615,427 shares of Series A Preferred Stock held by ARIAD Pharmaceuticals, Inc. ARIAD Pharmaceuticals, Inc., is a direct, wholly owned subsidiary of Takeda Pharmaceuticals U.S.A. Inc., which is a direct subsidiary of Takeda Pharmaceutical Company Limited (72.70%) and Takeda Pharmaceuticals International AG (27.3%). Takeda Pharmaceuticals International AG is a direct, wholly owned subsidiary of Takeda Pharmaceutical Company Limited.