Charles River Laboratories CEO Birgit Girshick Transfers Shares to Revocable Trust

This Form 4 filing reports that Birgit Girshick, Chief Executive Officer of Charles River Laboratories International, Inc., transferred 3,386 shares of common stock to a revocable trust controlled by her on June 5, 2026. The transaction was executed under Rule 16a-13 as an exempt transfer, with no monetary consideration involved. Following the transfer, Girshick's direct ownership decreased to 36,013 shares, while her indirect ownership through the trust increased to 43,803 shares. The filing also discloses that Girshick holds 8,722 stock options with an exercise price of $208.44 per share, expiring on May 31, 2034. This represents a routine estate planning transaction by a corporate officer.