Charles River Laboratories Director James C. Foster Transfers Shares to Trusts

This Form 4 filing reports that James C. Foster, a director of Charles River Laboratories International, Inc., transferred significant shareholdings to various trusts on June 5, 2026. The transactions involved the transfer of 153,361 shares from direct ownership to a revocable trust controlled by Foster, 20,000 shares to a 2026 GRAT (Grantor Retained Annuity Trust), and 10,000 shares from his spouse's holdings to a trust controlled by his spouse. All transfers were executed at $0 per share under Rule 16a-13, indicating they were exempt gifts or estate planning transactions. Following these transfers, Foster's direct holdings decreased while his indirect holdings through trusts increased. The director maintains substantial indirect ownership through various trusts including 2025 GRAT (10,780 shares) and 2024 GRAT (5,423 shares). These transactions appear to be part of estate planning and wealth management strategies rather than market-driven sales.