The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Nov 14, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 46K | $3.25 | $150K |
| Nov 14, 2024 | Friedberg Albert | Director, 10% Owner | Grant(A) | 31K | $3.25 | $100K |
| Nov 14, 2024 | Friedberg Albert | Director, 10% Owner | Grant(A) | 585K | $3.25 | $1.9M |
| Sep 18, 2024 | Friedberg Albert | Director, 10% Owner | Option exercise(M) | 214K | $5.64 | $1.2M |
| Sep 18, 2024 | Friedberg Albert | Director, 10% Owner | Option exercise(M) | 26K | $5.64 | $145K |
| Sep 18, 2024 | Friedberg Albert | Director, 10% Owner | Option exercise(M) | 26K | — | $0 |
| Sep 18, 2024 | Friedberg Albert | Director, 10% Owner | Grant(A) | 653K | $0.13 | $85K |
| Sep 18, 2024 | Friedberg Albert | Director, 10% Owner | Option exercise(M) | 214K | — | $0 |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 36K | $5.64 | $201K |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 10K | $5.64 | $55K |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 30K | $5.64 | $167K |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 39K | $5.64 | $218K |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 36K | — | $0 |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 39K | — | $0 |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 170K | $0.13 | $22K |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 30K | — | $0 |
| Sep 18, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Option exercise(M) | 10K | — | $0 |
| Aug 9, 2024 | Friedberg Albert | Director, 10% Owner | Buy(P) | 100 | $4.51 | $451 |
| Aug 6, 2024 | FCMI Parent Co. | 10% Owner | Buy(P) | 3K | $4.92 | $14K |
| Aug 5, 2024 | FCMI Parent Co. | 10% Owner | Buy(P) | 4K | $4.60 | $17K |
| Aug 1, 2024 | Friedberg Albert | Director, 10% Owner | Buy(P) | 12K | $4.72 | $55K |
| Jul 31, 2024 | FCMI Parent Co. | 10% Owner | Buy(P) | 101K | $5.74 | $578K |
| Jul 31, 2024 | FCMI Parent Co. | 10% Owner | Buy(P) | 83K | $6.41 | $534K |
| Jul 31, 2024 | FCMI Parent Co. | 10% Owner | Buy(P) | 16K | $7.40 | $119K |
| May 30, 2024 | Friedberg Albert | Director, 10% Owner | Buy(P) | 861 | $5.20 | $4K |
| May 29, 2024 | Friedberg Albert | Director, 10% Owner | Buy(P) | 957 | $4.95 | $5K |
| May 10, 2024 | Frieberg Jacob B. | Director | Grant(A) | 2K | $3.96 | $9K |
| May 10, 2024 | Frieberg Jacob B. | Director | Grant(A) | 10K | — | $0 |
| May 10, 2024 | Stecyk Chrystyna Bedrij | Director | Grant(A) | 10K | — | $0 |
| May 10, 2024 | Manian Bala S | Director | Grant(A) | 3K | $3.96 | $11K |
| May 10, 2024 | Manian Bala S | Director | Grant(A) | 10K | — | $0 |
| May 10, 2024 | Van Strydonck, Gerald E. | Director | Grant(A) | 543 | $5.75 | $3K |
| May 10, 2024 | Van Strydonck, Gerald E. | Director | Grant(A) | 10K | — | $0 |
| May 10, 2024 | Yanni Barbara | Director | Grant(A) | 10K | — | $0 |
| Apr 19, 2024 | Friedberg Albert | Director, 10% Owner | Buy(P) | 282 | $4.73 | $1K |
| Mar 28, 2024 | FCMI Parent Co. | 10% Owner | Grant(A) | 103K | $7.77 | $800K |
| Mar 28, 2024 | FCMI Parent Co. | 10% Owner | Grant(A) | 103K | $7.77 | $800K |
| Mar 28, 2024 | Vaccinex (Rochester), L.L.C. | 10% Owner | Grant(A) | 39K | $7.77 | $300K |
| Mar 28, 2024 | Vaccinex (Rochester), L.L.C. | 10% Owner | Grant(A) | 39K | $7.77 | $300K |
| Mar 21, 2024 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 2K | — | $0 |
| Mar 21, 2024 | Evans Elizabeth E. | Chief Operating Officer | Grant(A) | 1K | — | $0 |
| Mar 21, 2024 | Sanchez Jill | Chief Financial Officer | Grant(A) | 805 | — | $0 |
| Mar 21, 2024 | Smith Ernest S. | SVP, Research & CSO | Grant(A) | 1K | — | $0 |
| Feb 8, 2024 | FCMI Parent Co. | 10% Owner | Grant(A) | 1.7M | $0.73 | $1.2M |
| Feb 8, 2024 | FCMI Parent Co. | 10% Owner | Grant(A) | 1.7M | $0.73 | $1.2M |
| Feb 8, 2024 | Vaccinex (Rochester), L.L.C. | 10% Owner | Grant(A) | 414K | $0.73 | $302K |
| Feb 8, 2024 | Vaccinex (Rochester), L.L.C. | 10% Owner | Grant(A) | 414K | $0.73 | $302K |
| Dec 26, 2023 | Van Strydonck, Gerald E. | Director | Sell(S) | 3K | $0.72 | $2K |
| Dec 8, 2023 | Van Strydonck, Gerald E. | Director | Sell(S) | 1K | $0.67 | $894 |
| Nov 2, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 137K | $0.13 | $18K |
| Oct 23, 2023 | Frieberg Jacob B. | Director | Disposed to issuer(D) | 11K | $0.77 | $9K |
| Oct 4, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Buy(P) | 5K | $0.97 | $5K |
| Oct 3, 2023 | Friedberg Albert | Director, 10% Owner | Buy(P) | 3.0M | $1.00 | $3.0M |
| Oct 3, 2023 | Friedberg Albert | Director, 10% Owner | Buy(P) | 3.0M | $1.00 | $3.0M |
| Oct 3, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Buy(P) | 500K | $1.00 | $500K |
| Oct 3, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Buy(P) | 5K | $0.93 | $5K |
| Oct 3, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Buy(P) | 500K | $1.00 | $500K |
| Sep 29, 2023 | Frieberg Jacob B. | Director | Grant(A) | 11K | $0.77 | $9K |
| Sep 22, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 2.1M | $0.16 | $328K |
| Jun 30, 2023 | Frieberg Jacob B. | Director | Grant(A) | 2K | $3.62 | $9K |
| May 15, 2023 | Friedberg Albert | Director, 10% Owner | Grant(A) | 6.7M | $0.37 | $2.5M |
| May 11, 2023 | Van Strydonck, Gerald E. | Director | Grant(A) | 144K | — | $0 |
| May 11, 2023 | Yanni Barbara | Director | Grant(A) | 144K | — | $0 |
| May 11, 2023 | Manian Bala S | Director | Grant(A) | 144K | — | $0 |
| May 11, 2023 | Frieberg Jacob B. | Director | Grant(A) | 144K | — | $0 |
| May 11, 2023 | Stecyk Chrystyna Bedrij | Director | Grant(A) | 144K | — | $0 |
| Mar 31, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 732K | $0.41 | $300K |
| Mar 31, 2023 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 56K | — | $0 |
| Mar 31, 2023 | Royer Scott E. | Chief Financial Officer | Grant(A) | 32K | — | $0 |
| Mar 31, 2023 | Smith Ernest S. | SVP, Research & CSO | Grant(A) | 40K | — | $0 |
| Mar 31, 2023 | Friedberg Albert | Director, 10% Owner | Grant(A) | 4.1M | $0.41 | $1.7M |
| Mar 31, 2023 | Frieberg Jacob B. | Director | Grant(A) | 32K | $0.27 | $9K |
| Mar 31, 2023 | Evans Elizabeth E. | Chief Operating Officer | Grant(A) | 40K | — | $0 |
| Mar 31, 2023 | Leonard John E. | SVP, Development | Grant(A) | 20K | — | $0 |
| Dec 31, 2022 | Frieberg Jacob B. | Director | Grant(A) | 20K | $0.44 | $9K |
| Dec 6, 2022 | Zauderer Maurice | President and CEO, Director, 10% Owner | Inheritance(W) | 4K | — | $0 |
| Nov 23, 2022 | Van Strydonck, Gerald E. | Director | Grant(A) | 47K | $0.53 | $25K |
| Nov 23, 2022 | Frieberg Jacob B. | Director | Grant(A) | 189K | $0.53 | $100K |
| Nov 23, 2022 | Zauderer Maurice | President and CEO, Director, 10% Owner | Grant(A) | 1.5M | $0.53 | $801K |
| Nov 23, 2022 | Friedberg Albert | Director, 10% Owner | Grant(A) | 3.8M | $0.53 | $2.0M |
| Sep 30, 2022 | Frieberg Jacob B. | Director | Grant(A) | 26K | — | $0 |
| Jun 30, 2022 | Frieberg Jacob B. | Director | Grant(A) | 12K | — | $0 |
| May 12, 2022 | Frieberg Jacob B. | Director | Grant(A) | 53K | — | $0 |
| May 12, 2022 | Yanni Barbara | Director | Grant(A) | 53K | — | $0 |
| May 12, 2022 | Manian Bala S | Director | Grant(A) | 53K | — | $0 |
| May 12, 2022 | Van Strydonck, Gerald E. | Director | Grant(A) | 53K | — | $0 |
| May 12, 2022 | Stecyk Chrystyna Bedrij | Director | Grant(A) | 53K | — | $0 |
| Apr 1, 2022 | Royer Scott E. | Chief Financial Officer | Grant(A) | 16K | — | $0 |
| Apr 1, 2022 | Evans Elizabeth E. | Chief Operating Officer | Grant(A) | 20K | — | $0 |
| Apr 1, 2022 | Zauderer Maurice | President and CEO, Director | Grant(A) | 28K | — | $0 |
| Apr 1, 2022 | Leonard John E. | SVP, Development | Grant(A) | 16K | — | $0 |
| Apr 1, 2022 | Smith Ernest S. | SVP, Research & CSO | Grant(A) | 20K | — | $0 |
| Mar 31, 2022 | Frieberg Jacob B. | Director | Grant(A) | 10K | — | $0 |
| Feb 23, 2022 | Van Strydonck, Gerald E. | Director | Buy(P) | 2K | $1.30 | $3K |
| Feb 23, 2022 | Van Strydonck, Gerald E. | Director | Buy(P) | 18K | $1.32 | $24K |
| Jan 27, 2022 | Zauderer Maurice | President and CEO, Director | Buy(P) | 1.8M | $1.11 | $2.0M |
| Jan 27, 2022 | Friedberg Albert | Director, 10% Owner | Buy(P) | 1.8M | $1.11 | $2.0M |
| Jan 27, 2022 | Friedberg Albert | Director, 10% Owner | Buy(P) | 1.8M | $1.11 | $2.0M |
| Jan 27, 2022 | Frieberg Jacob B. | Director | Buy(P) | 90K | $1.11 | $100K |
| Dec 31, 2021 | Frieberg Jacob B. | Director | Grant(A) | 13K | $0.68 | $9K |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).