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Filing Details

Accession Number:: 0001209191-23-000204
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2023-01-03 16:24:38
Reporting Period:: 2022-12-29

Accepted Time:: 2023-01-03 16:24:38
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1745020	Theseus Pharmaceuticals Inc.	THRX	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1581754	B. James Tananbaum	900 Larkspur Landing Circle Suite 150 Larkspur CA 94939	No	No	Yes	No
1792204	Foresite Capital Fund V, L.p.	900 Larkspur Landing Circle Suite 150 Larkspur CA 94939	No	No	Yes	No
1792205	Foresite Capital Opportunity Fund V, L.p.	900 Larkspur Landing Circle Suite 150 Larkspur CA 94939	No	No	Yes	No
1792206	Foresite Capital Management V, Llc	900 Larkspur Landing Circle Suite 150 Larkspur CA 94939	No	No	Yes	No
1792207	Foresite Capital Opportunity Management V, Llc	900 Larkspur Landing Circle Suite 150 Larkspur CA 94939	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2022-12-29	250,000	$5.00	3,585,346	No	4	P	Indirect	See Footnote
Common Stock	Acquisiton	2022-12-29	250,000	$5.00	1,209,275	No	4	P	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Footnote
No	4	P	Indirect	See Footnote

Footnotes

The shares are owned directly by Foresite Capital Fund V, L.P. ("Fund V"). Foresite Capital Management V, LLC ("FCM V") is the general partner of Fund V and may be deemed to have sole voting and dispositive power over these shares. James B. Tananbaum ("Dr. Tananbaum") is the sole managing member of FCM V and may be deemed to have sole voting and dispositive power over these shares. Each Reporting Person disclaims the existence of a "group." Each of FCM V and Dr. Tananbaum disclaims beneficial ownership of these shares except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that FCM V or Dr. Tananbaum is the beneficial owner of these shares for purposes of Section 16 or any other purpose.
The shares are owned directly by Foresite Capital Opportunity Fund V, L.P. ("Opportunity Fund V"). Foresite Capital Opportunity Management V, LLC ("FCOM V") is the general partner of Opportunity Fund V and may be deemed to have sole voting and dispositive power over these shares. Dr. Tananbaum is the sole managing member of FCOM V and may be deemed to have sole voting and dispositive power over these shares. Each Reporting Person disclaims the existence of a "group." Each of FCOM V and Dr. Tananbaum disclaims beneficial ownership of these shares except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that FCOM V or Dr. Tananbaum is the beneficial owner of these shares for purposes of Section 16 or any other purpose.