ALLEGRO MICROSYSTEMS, INC. — Director's Dealing 2021

May 26, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLEGRO MICROSYSTEMS, INC. (ALGM)
CIK: 0000866291
Period of Report: 2021-05-24

Reporting Person: Vig Ravi (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-24	Common Stock	S	1100	$25.01	Disposed	1814704	Direct
2021-05-25	Common Stock	S	21881	$25.44	Disposed	1792823	Direct
2021-05-26	Common Stock	S	17019	$25.83	Disposed	1775804	Direct
2021-05-24	Common Stock	S	1000	$25	Disposed	552090	Indirect
2021-05-25	Common Stock	S	21847	$25.45	Disposed	530243	Indirect
2021-05-26	Common Stock	S	17153	$25.83	Disposed	513090	Indirect
2021-05-24	Common Stock	S	919	$25	Disposed	552171	Indirect
2021-05-25	Common Stock	S	21847	$25.45	Disposed	530324	Indirect
2021-05-26	Common Stock	S	17234	$25.82	Disposed	513090	Indirect
2021-05-24	Common Stock	S	1040	$25	Disposed	552050	Indirect
2021-05-25	Common Stock	S	21787	$25.45	Disposed	530263	Indirect
2021-05-26	Common Stock	S	17173	$25.82	Disposed	513090	Indirect

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2021.

F2: The reported transaction involves sale transactions ranging from $25.00 to $25.03 per share. The weighted average price per share was $25.01. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F3: The reported transaction involves sale transactions ranging from $25.01 to $25.85 per share. The weighted average price per share was $25.44. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F4: The reported transaction involves sale transactions ranging from $25.17 to $26.15 per share. The weighted average price per share was $25.83. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F5: The reported transaction involves sale transactions ranging from $25.00 to $25.01 per share. The weighted average price per share was $25.00. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F6: The reported transaction involves sale transactions ranging from $25.00 to $25.86 per share. The weighted average price per share was $25.45. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F7: The reported transaction involves sale transactions ranging from $25.26 to $26.15 per share. The weighted average price per share was $25.83. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F8: The reported transaction involves sale transactions ranging from $25.01 to $25.85 per share. The weighted average price per share was $25.45. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

F9: The reported transaction involves sale transactions ranging from $25.05 to $26.15 per share. The weighted average price per share was $25.82. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.