Robert S. Breuil - 01 Dec 2022 Form 4 Insider Report for GRAYBUG VISION, INC. (CALC)

Role: Chief Financial Officer
Signature: /s/ Frederic Guerard, as Attorney-in-Fact for Robert S. Breuil
Issuer symbol: CALC
Transactions as of: 01 Dec 2022
Net transactions value: -$2,165
Form type: 4
Filing time: 01 Dec 2022, 15:50:59 UTC
Previous filing: 29 Nov 2022
Next filing: 14 Dec 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CALC	Common Stock	Options Exercise		+9,938	+13%		87,232	01 Dec 2022	Direct	F1
transaction	CALC	Common Stock	Tax liability	$2,165	-3,437	-3.9%	$0.6300	83,795	01 Dec 2022	Direct

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	CALC	Restricted Stock Units	Options Exercise	$0	-9,938	-9.1%	$0.000000	99,375	01 Dec 2022	Common Stock	9,938		Direct	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.
F2	The RSUs vested as to 1/4 of the total shares on May 19, 2022, and 1/16 of the remaining shares shall vest quarterly thereafter such that the RSUs shall be fully vested on May 19, 2025, subject to the continued service of the Reporting Person to the Issuer through each vesting date.
F3	The RSUs do not expire; they either vest or are canceled prior to vest date.