ISCO Director Paul Maier Disposes 30,000 Derivative Shares

What Happened

• Paul V. Maier, a director of International Stem Cell Corp. (ISCO), reported a disposition to the issuer of 30,000 derivative shares on 2026-09-16. The reported price was $0.00, so no cash proceeds were received.
• The filing treats these as derivative securities tied to options; a footnote states the options fully vested on 06/11/2025 (grant date 06/11/2024).

Key Details

• Transaction date: 2026-09-16; Filing date: 2026-09-17 (timely).
• Transaction type/code: Disposition to issuer (derivative) — reported as D.
• Shares disposed: 30,000; Price per share: $0.00; Total reported value: $0.
• Footnote: F1 — the underlying options vested on 06/11/2025 from grant 06/11/2024.
• Shares owned after the transaction: Not specified in the provided filing details.
• Filing appears timely (no late-filing flag).

Context

• This was not an open-market sale — it’s a derivative disposition to the issuer (e.g., surrender, cancellation, or other non-cash settlement of option-based shares). That means it does not reflect a typical cash sale and should not be interpreted the same way as an outright market sell order.
• As always, derivative transactions can reflect contractual or tax mechanics rather than a director’s market view; the filing is factual and does not indicate motivation.