Mark S. Blumenkranz
CIK: 0001614869
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)1 (100.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
ANNX
Annexon, Inc.
Director
Discretionary Trading P&L
Holdings
About Blumenkranz Mark S.
Blumenkranz Mark S. (SEC CIK 0001614869) files insider reports with the SEC as Director of Annexon, Inc. (ANNX).
Signal8 holds 2 ownership filings by Blumenkranz Mark S. (1 Form 3, 1 Form 4), filed on Aug 12, 2026. Those filings report 1 transaction, the latest on Aug 10, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Blumenkranz Mark S.'s filings is in BRISBANE, CA.
Recent filings by Blumenkranz Mark S.
- Aug 10, 2026: Grant or award of ANNX derivative securities (Form 4, code A).
Other insiders filing for Annexon, Inc. (ANNX)
- Love Douglas, PRESIDENT AND CEO
- Waddill William D., Director
- Satter Muneer A, Director
- JONES WILLIAM A JR, Director
- Cockroft Bettina M., Director
- Choi Jung, Director