Rishi Gupta - Jul 20, 2023 Form 3 Insider Report for Turnstone Biologics Corp. (TSBX)

Role: Director, 10%+ Owner
Signature: /s/ P. Joseph Campisi, Jr., Attorney-in-Fact
Stock symbol: TSBX
Transactions as of: Jul 20, 2023
Transactions value $: $0
Form type: 3
Date filed: 7/20/2023, 09:51 PM
Previous filing: May 19, 2023
Next filing: Oct 17, 2023

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	TSBX	Series B-1 Preferred Stock							Jul 20, 2023	Common Stock	937K		See footnotes	F1, F2, F3
holding	TSBX	Series B-2 Preferred Stock							Jul 20, 2023	Common Stock	1.25M		See footnotes	F1, F2, F3
holding	TSBX	Series C Preferred Stock							Jul 20, 2023	Common Stock	266K		See footnotes	F1, F2, F3
holding	TSBX	Series D Preferred Stock							Jul 20, 2023	Common Stock	229K		See footnotes	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Each share of Series B-1 Preferred Stock, Series, Series B-2 Preferred Stock, Series C Preferred Stock and Series D Preferred Stock will automatically convert into shares of Common Stock on a 7.9872 for 1 basis immediately prior to the closing of the Issuer's initial public offering and have no expiration date.
F2	These securities are held of record by OrbiMed Private Investments VI, LP ("OPI VI"). OrbiMed Capital GP VI LLC ("GP VI") is the general partner of OPI VI and OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of GP VI. By virtue of such relationships, OrbiMed Advisors and GP VI may be deemed to have voting power and investment power over the securities held by OPI VI and, as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Advisors exercises voting and investment power through a management committee comprised of Carl L. Gordon, Sven H. Borho, and W. Carter Neild, each of whom disclaims beneficial ownership of the securities held by OPI VI. Each of the Reporting Person, OrbiMed Advisors, and GP VI disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Exchange Act, except to the extent of his or its pecuniary interest, if any.
F3	This report shall not be deemed an admission that any of the Reporting Person, OrbiMed Advisors, or GP VI is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

Remarks:

Exhibit List - Exhibit 24 - Power of Attorney