Donnelley Financial Solutions, Inc.

Issuer Purchases of Equity Securities

(a)

As further described in Note 10, Capital Stock, to the Unaudited Condensed Consolidated Financial Statements, on November 14, 2023, the Company’s Board of Directors authorized the repurchase of up to $150 million of the Company’s outstanding common stock commencing on January 1, 2024, with an expiration date of December 31, 2025. On May 15, 2025, the Board authorized the repurchase of up to $150 million of the Company’s outstanding common stock commencing on May 16, 2025, with an expiration date of December 31, 2026. This new share repurchase program replaces the previous $150 million program. The stock repurchase program may be suspended or discontinued at any time. The timing and amount of any shares repurchased are determined by the Company based on its evaluation of market conditions and other factors and may be completed from time to time in one or more transactions on the open market or in privately negotiated purchases in accordance with all applicable securities laws and regulations and all repurchases in the open market will be made in compliance with Rule 10b-18 under the Exchange Act. Repurchases may also be made under a Rule 10b5-1 plan, which would permit shares to be repurchased when the Company might otherwise be precluded from doing so.