GIBRALTAR INDUSTRIES, INC. — Director's Dealing 2021

May 14, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GIBRALTAR INDUSTRIES, INC. (ROCK)
CIK: 0000912562
Period of Report: 2021-05-12

Reporting Person: MONTAGUE WILLIAM P (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-12	Common Stock	J	1500	—	Disposed	36274	Direct
2021-05-12	Common Stock	J	1500	—	Acquired	1500	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock (Restricted)	2000	Direct
Deferred Stock Units	12362	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Unit (MSPP Match Post-2012)	$		Common Stock (3812.69)	3812.69	Direct
Restricted Stock Unit (MSPP Match)	$		Common Stock (7431.61)	7431.61	Direct
Restricted Stock Unit (MSPP Post-2012)	$		Common Stock (3812.69)	3812.69	Direct
Restricted Stock Unit (MSPP)	$		Common Stock (14873.74)	14873.74	Direct

Footnotes

F1: Represents a change in form of beneficial ownership from "Direct" to "Indirect" as a result of a transfer to an account of an LLC wholly owned by the Reporting Person's family, in which the Reporting Person maintains sole managerial authority.

F2: Represents a change in form of beneficial ownership from "Direct" to "Indirect" as a result of a transfer to an account of an LLC wholly owned by the Reporting Person's family, in which the Reporting Person maintains sole managerial authority.

F3: Represents matching restricted stock units allocated to the Reporting Person after 2012 with respect to the Reporting Person's deferral of a portion of his annual retainer fee pursuant to the Company's Management Stock Purchase Plan.

F4: Restricted stock units are forfeited if Reporting Person's service as a director of the Company is terminated prior to age sixty (60). If service as a director continues through age sixty (60), restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service. Each restricted stock unit is converted to cash in an amount equal to the fair market value (200 day rolling average) of one share of the Company's common stock on the date of termination of the Reporting Person's service as a director of the Company.

F5: Represents matching restricted stock units allocated to the Reporting Person pursuant to the Company's Management Stock Purchase Plan equal in number to restricted stock units allocated to reflect the Reporting Person's deferral of a portion of his annual director retainer fee.

F6: Restricted stock units are forfeited if Reporting Person's service as a director of the Company is terminated prior to age sixty (60). If service as a director continues through age sixty (60), restricted stock units are payable solely in cash in five (5) consecutive, substantially equal annual installments, beginning in January of the year following the year in which termination of service occurs. Each restricted stock unit is converted to cash in an amount equal to the fair market value (200 day rolling average) of one share of the Company's common stock on the date of termination of the Reporting Person's service as a director of the Company.

F7: Represents restricted stock units allocated to the Reporting Person after 2012 pursuant to the Company's Management Stock Purchase Plan to reflect the Reporting Person's deferral of a portion of his annual director retainer fee.

F8: Restricted stock units are payable solely in cash in one lump sum payment or in five (5) or ten (10) consecutive, substantially equal annual installments, whichever distribution form is elected by the Reporting Person, beginning six (6) months following termination of service as a director of the Company. Each restricted stock unit is converted to cash in an amount equal to the fair market value (200 day rolling average) of one share of the Company's common stock on the date of termination of the Reporting Person's service as a director of the Company.

F9: Represents restricted stock units allocated to Reporting Person pursuant to the Company's Management Stock Purchase Plan reflecting deferred annual director fees.

F10: Restricted stock units are payable solely in cash in five (5) consecutive, substantially equal annual installments beginning in January of the year following the year in which termination of service as a member of the Company's Board of Directors occurs. Each restricted stock unit is converted to cash in an amount equal to the fair market value (200 day rolling average) of one share of the Company's common stock on the date of termination of the Reporting Person's service as a director of the Company