Carl Goldfischer - May 17, 2022 Form 4 Insider Report for Epizyme, Inc. (EPZM)

Role: Director
Signature: /s/John Weidenbruch, attorney-in-fact
Stock symbol: EPZM
Transactions as of: May 17, 2022
Transactions value $: $0
Form type: 4
Date filed: 5/19/2022, 04:23 PM
Previous filing: Nov 19, 2021
Next filing: Jun 3, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EPZM	Common Stock, par value $0.0001	Award	$0	+8.99K	+68.87%	$0.00	22.1K	May 17, 2022	Direct	F1
holding	EPZM	Common Stock, par value $0.0001						3.38M	May 17, 2022	See Footnote	F2

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
transaction	EPZM	Stock Option (Right to Buy)	Award	$0	+41K		$0.00	41K	May 17, 2022	Common Stock	41K	$0.56	Direct	F3

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

Explanation of Responses:

Id	Content
F1	Consists of shares of Common Stock issuable under 8,994 restricted stock units ("RSUs") granted on May 17, 2022, which RSUs are scheduled to vest with respect to all shares on the first anniversary of the grant date or, if earlier, immediately prior to the first annual meeting of stockholders occurring after the grant date, subject to continued service as a director. Each RSU represents the right to receive one share of Common Stock upon vesting. In the event of a change in control of the Issuer, the RSUs will vest in full.
F2	Represents shares of common stock held by entities affiliated with Bay City Capital, LLC including Bay City Capital Fund V, L.P. and Bay City Capital Fund V Co-Investment Fund, L.P. Bay City Capital Management V LLC ("GP V") is the general partner of Bay City Capital Fund V, L.P. and Bay City Capital Fund V Co-Investment Fund, L.P. (collectively, "BCC V"). Bay City Capital, LLC ("BCC LLC") is the manager of GP V. The Reporting Person is an investment partner and managing director of BCC LLC and shares voting and dispositive power with respect to shares held by BCC V. The Reporting Person disclaims beneficial ownership of these shares, except to the extent of any pecuniary interest therein.
F3	This option was granted on May 17, 2022 and is scheduled to vest with respect to all shares on the first anniversary of the grant date or, if earlier, immediately prior to the first annual meeting of stockholders occurring after the grant date, subject to continued service as a director. In the event of a change in control of the Issuer, the option will become exercisable in full.