Quarterhill Inc. — Proxy Solicitation & Information Statement 2025

Mar 3, 2025

March 03, 2025

Computershare

100 University Avenue, 8th floor

Toronto ON, M5J 2Y1

www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: QUARTERHILL INC.

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type :	Annual General and Special Meeting
Record Date for Notice of Meeting :	March 28, 2025
Record Date for Voting (if applicable) :	March 28, 2025
Beneficial Ownership Determination Date :	March 28, 2025
Meeting Date :	May 12, 2025
Meeting Location (if available) :	Virtual Meeting
Issuer sending proxy related materials directly to NOBO:	Yes
Issuer paying for delivery to OBO:	Yes

Notice and Access (NAA) Requirements:

NAA for Beneficial Holders	Yes
Beneficial Holders Stratification Criteria:	Not Applicable
NAA for Registered Holders	Yes
Registered Holders Stratification Criteria:	Not Applicable

Voting Security Details:

Description	CUSIP Number	ISIN
COMMON SHARES	747713105	CA7477131055

Sincerely,

Computershare

Agent for QUARTERHILL INC.