Ryan Martins - 03 Feb 2023 Form 4 Insider Report for 89bio, Inc. (ETNB)

Role: Chief Financial Officer
Signature: /s/ Ryan A. Murr, as attorney-in-fact for Ryan Martins
Issuer symbol: ETNB
Transactions as of: 03 Feb 2023
Net transactions value: -$45,356
Form type: 4
Filing time: 07 Feb 2023, 18:36:16 UTC
Previous filing: 03 Feb 2023
Next filing: 10 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ETNB	Common Stock	Options Exercise	$9,330	+3,000	+8.3%	$3.11^*	38,960	03 Feb 2023	Direct
transaction	ETNB	Common Stock	Sale	$39,330	-3,000	-7.1%	$13.11	38,960	03 Feb 2023	Direct	F1
transaction	ETNB	Common Stock	Sale	$7,518	-592	-1.6%	$12.70	35,368	03 Feb 2023	Direct	F1
transaction	ETNB	Common Stock	Tax liability	$7,838	-592	-1.7%	$13.24	34,348	05 Feb 2023	Direct	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	ETNB	Stock Option (Right to Buy)	Options Exercise	$0	-3,000	-3.5%	$0.000000	81,901	03 Feb 2023	Common Stock	3,000	$3.11	Direct	F3

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

Explanation of Responses:

Id	Content
F1	This transaction was executed pursuant to a Rule 10b5-1 trading plan.
F2	Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the release of 2,500 performance stock units on February 5, 2023.
F3	This option represents a right to purchase a total of 94,901 shares of the Issuer's common stock, one quarter of which vested on July 21, 2020, with the remaining three quarters vesting in equal quarterly installments over the following three years.