Column Group III Gp, LP reports an option exercise at SRZN

Filing context

• Quantities and prices are shown in the units filed. No trade value is inferred from their product.
• COLUMN GROUP III GP, LP: 10% owner.
• COLUMN GROUP III-A, LP: 10% owner.
• COLUMN GROUP III, LP: 10% owner.
• Column Group Opportunity III, LP: 10% owner.
• Column Group Opportunity III GP, LP: 10% owner.
• TCG Opportunity III GP, LLC: 10% owner.
• Svennilson Peter: 10% owner.
• F1: Each Second Tranche Unit consists of (a) one share of the Issuer's Common Stock and (b) one half of a Series E Common Warrant to purchase shares of Common Stock. The Second Tranche Units were purchased in the Issuer's private placement on October 20, 2026 (the "2026 Private Placement").
• F2: Represents a price per unit, consisting of (i) $11.5375 per share of the Issuer's Common Stock and (ii) $0.0625 attributable to accompanying warrants to purchase shares of the Issuer's Common Stock, which The Column Group III, LP ("TCG III LP"), The Column Group III-A, LP ("TCG III-A LP") and The Column Group Opportunity III, LP ("TCG Opportunity III LP") purchased in the Issuer's 2026 Private Placement.
• F3: The securities are directly held by The Column Group III, LP ("TCG III LP"). The Column Group III GP, LP ("TCG III GP") is the general partner of TCG III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors (collectively, the "Managing Partners"). The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
• F4: The securities are directly held by The Column Group III-A, LP ("TCG III-A LP"). TCG III GP is the general partner of TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are the Managing Partners. The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
• F5: The securities are directly held by The Column Group Opportunity III, LP ("TCG Opportunity III LP"). The Column Group Opportunity III GP, LP ("TCG Opportunity III GP LP") is the general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. TCG Opportunity III GP, LLC ("TCG Opportunity III GP LLC") is the general partner of TCG Opportunity III GP LP and the ultimate general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing members of TCG Opportunity III GP LLC are the Managing Partners. TCG Opportunity III GP LP, TCG Opportunity III GP LLC and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
• F6: Consists of (a) 485,830 shares of the Issuer's Common Stock and (b) 242,915 Series E Common Warrants to purchase shares of the Issuer's Common Stock.
• F7: Consists of (a) 548,653 shares of the Issuer's Common Stock and (b) 274,327 Series E Common Warrants to purchase shares of the Issuer's Common Stock.
• F8: Consists of (a) 517,241 shares of the Issuer's Common Stock and (b) 258,620 Series E Common Warrants to purchase shares of the Issuer's Common Stock.
• F9: These Series E Common Warrants are exercisable immediately and will not expire until exercised in full (subject to certain beneficial ownership limitations).