Geert R. Kersten

Insider · Chief Executive Officer · CVM

Geert R. Kersten files insider transactions with the SEC as a chief executive officer of Cel Sci (CVM). We hold 4 disclosed purchases and sales filed since 4 January 2006, 1 of them in the last 90 days.

Files forCVM
Disclosed buys and sells4 in all, 1 in the last 90 days
Last disclosure26 August 2026

Positions held

2 posts we hold — a term names its own dates; a run of filings only says when they filed

Filed 4 November 2014 — 25 August 2026Chief Executive Officer · Cel Sci (CVM)72 Form 4 lines · source: SEC Form 4
Filed 30 December 2005 — 31 December 2024CEO · Cel Sci (cvm)113 Form 4 lines · source: SEC Form 4

Everything they disclosed

120 entries, newest first — one per disclosure report, one per Form 4 line

▲ bought on the open market 100,000 shares of Cel SciSEC Form 426 August 2026Common Stock · traded 25 August 2026 · filed 26 August 2026
was granted 300,000 shares of Cel Sci (a derivative holding)SEC Form 417 August 2026Options · traded 14 August 2026 · filed 17 August 2026
was granted 5,192 shares of Cel SciSEC Form 41 July 2026Common Stock · traded 30 June 2026 · filed 1 July 2026
▲ bought on the open market 300,000 shares of Cel SciSEC Form 418 May 2026Common Stock · traded 14 May 2026 · filed 18 May 2026
▲ bought on the open market 100,000 shares of Cel SciSEC Form 414 May 2026Common Stock · traded 13 May 2026 · filed 14 May 2026
was granted 1,682 shares of Cel SciSEC Form 41 April 2026Common Stock · traded 31 March 2026 · filed 1 April 2026
▲ bought on the open market 38,023 shares of Cel SciSEC Form 426 January 2026Common Stock · traded 22 January 2026 · filed 26 January 2026
▲ bought on the open market 38,023 shares of Cel SciSEC Form 426 January 2026Common Stock · traded 22 January 2026 · filed 26 January 2026
was granted 998 shares of Cel SciSEC Form 45 January 2026Common Stock · traded 31 December 2025 · filed 5 January 2026
was granted 998 shares of Cel SciSEC Form 45 January 2026Common Stock · traded 31 December 2025 · filed 5 January 2026
▲ bought on the open market 8,389 shares of Cel SciSEC Form 45 December 2025Common Stock · traded 4 December 2025 · filed 5 December 2025
was granted 570 shares of Cel SciSEC Form 42 October 2025Common Stock · traded 30 September 2025 · filed 2 October 2025
was granted 25,000 shares of Cel Sci (a derivative holding)SEC Form 429 July 2025Options · traded 28 July 2025 · filed 29 July 2025
▲ bought on the open market 29,197 shares of Cel SciSEC Form 428 July 2025Common Stock · traded 25 July 2025 · filed 28 July 2025
was granted 2,292 shares of Cel SciSEC Form 41 July 2025Common Stock · traded 30 June 2025 · filed 1 July 2025
was granted 22,786 shares of Cel SciSEC Form 41 April 2025Common Stock · traded 31 March 2025 · filed 1 April 2025
was granted 12,940 shares of Cel SciSEC Form 42 January 2025Common Stock · traded 31 December 2024 · filed 2 January 2025
was granted 4,882 shares of Cel SciSEC Form 41 October 2024Common Stock · traded 30 September 2024 · filed 1 October 2024
was granted 4,461 shares of Cel SciSEC Form 41 July 2024Common Stock · traded 28 June 2024 · filed 1 July 2024
▲ bought on the open market 30,000 shares of Cel SciSEC Form 49 May 2024Common Stock · traded 8 May 2024 · filed 9 May 2024
was granted 250,000 shares of Cel Sci (a derivative holding)SEC Form 423 April 2024Options · traded 19 April 2024 · filed 23 April 2024
was granted 2,709 shares of Cel SciSEC Form 42 April 2024Common Stock · traded 29 March 2024 · filed 2 April 2024
was granted 1,819 shares of Cel SciSEC Form 42 January 2024Common Stock · traded 29 December 2023 · filed 2 January 2024
was granted 3,960 shares of Cel SciSEC Form 43 October 2023Common Stock · traded 29 September 2023 · filed 3 October 2023
was granted 250,000 shares of Cel Sci (a derivative holding)SEC Form 410 August 2023Options · traded 8 August 2023 · filed 10 August 2023
was granted 2,053 shares of Cel SciSEC Form 43 July 2023Common Stock · traded 30 June 2023 · filed 3 July 2023
was granted 2,133 shares of Cel SciSEC Form 46 April 2023Common Stock · traded 31 March 2023 · filed 6 April 2023
was granted 1,851 shares of Cel SciSEC Form 43 January 2023Common Stock · traded 30 December 2022 · filed 3 January 2023
was granted 1,407 shares of Cel SciSEC Form 43 October 2022Common Stock · traded 30 September 2022 · filed 3 October 2022
was granted 966 shares of Cel SciSEC Form 45 July 2022Common Stock · traded 30 June 2022 · filed 5 July 2022
was granted 250,000 shares of Cel Sci (a derivative holding)SEC Form 414 June 2022Options · traded 13 June 2022 · filed 14 June 2022
was granted 1,106 shares of Cel SciSEC Form 431 March 2022Common Stock · traded 31 March 2022 · filed 31 March 2022
was granted 612 shares of Cel SciSEC Form 43 January 2022Common Stock · traded 31 December 2021 · filed 3 January 2022
was granted 50,000 shares of Cel Sci (a derivative holding)SEC Form 429 November 2021Options · traded 19 November 2021 · filed 29 November 2021
was granted 395 shares of Cel SciSEC Form 44 October 2021Common Stock · traded 30 September 2021 · filed 4 October 2021
▲ bought on the open market 25,000 shares of Cel SciSEC Form 47 July 2021Common Stock · traded 6 July 2021 · filed 7 July 2021
was granted 501 shares of Cel SciSEC Form 41 July 2021Common Stock · traded 30 June 2021 · filed 1 July 2021
was granted 592,000 shares of Cel Sci (a derivative holding)SEC Form 417 May 2021Options · traded 14 May 2021 · filed 17 May 2021
was granted 285 shares of Cel SciSEC Form 41 April 2021Common Stock · traded 31 March 2021 · filed 1 April 2021
was granted 366 shares of Cel SciSEC Form 44 January 2021Common Stock · traded 31 December 2020 · filed 4 January 2021
was granted 335 shares of Cel SciSEC Form 41 October 2020Common Stock · traded 30 September 2020 · filed 1 October 2020
was granted 286 shares of Cel SciSEC Form 41 July 2020Common Stock · traded 30 June 2020 · filed 1 July 2020
was granted 592,000 shares of Cel Sci (a derivative holding)SEC Form 420 April 2020Options · traded 20 April 2020 · filed 20 April 2020
was granted 370 shares of Cel SciSEC Form 41 April 2020Common Stock · traded 31 March 2020 · filed 1 April 2020
▲ bought on the open market 4,617 shares of Cel SciSEC Form 427 February 2020Common Stock · traded 26 February 2020 · filed 27 February 2020
▲ bought on the open market 6,631 shares of Cel SciSEC Form 413 January 2020Common Stock · traded 10 January 2020 · filed 13 January 2020
was granted 483 shares of Cel SciSEC Form 43 January 2020Common Stock · traded 31 December 2019 · filed 3 January 2020
▲ bought on the open market 3,725 shares of Cel SciSEC Form 428 October 2019Common Stock · traded 25 October 2019 · filed 28 October 2019
was granted 461 shares of Cel SciSEC Form 41 October 2019Common Stock · traded 30 September 2019 · filed 1 October 2019
was granted 3,492 shares of Cel SciSEC Form 45 September 2019Common Stock · traded 4 September 2019 · filed 5 September 2019
was granted 6,631 shares of Cel SciSEC Form 43 June 2019Common Stock · traded 3 June 2019 · filed 3 June 2019
was granted 14,577 shares of Cel SciSEC Form 48 May 2019Common Stock · traded 7 May 2019 · filed 8 May 2019
was granted 813,180 shares of Cel Sci (a derivative holding)SEC Form 412 April 2019Options · traded 11 April 2019 · filed 12 April 2019
was granted 1,165 shares of Cel SciSEC Form 41 April 2019Common Stock · traded 29 March 2019 · filed 1 April 2019
was granted 1,437 shares of Cel SciSEC Form 42 January 2019Common Stock · traded 31 December 2018 · filed 2 January 2019
was granted 1,018 shares of Cel SciSEC Form 41 October 2018Common Stock · traded 28 September 2018 · filed 1 October 2018
was granted 150,000 shares of Cel Sci (a derivative holding)SEC Form 428 August 2018Series MM Warrants · traded 24 August 2018 · filed 28 August 2018
was granted 65,000 shares of Cel Sci (a derivative holding)SEC Form 428 August 2018Series NN Warrants · traded 24 August 2018 · filed 28 August 2018
was granted 100,000 shares of Cel Sci (a derivative holding)SEC Form 428 August 2018Series RR Warrants · traded 24 August 2018 · filed 28 August 2018
was granted 40,000 shares of Cel Sci (a derivative holding)SEC Form 428 August 2018Series UU Warrants · traded 24 August 2018 · filed 28 August 2018
was granted 301,205 shares of Cel SciSEC Form 414 August 2018Common Stock · traded 13 August 2018 · filed 14 August 2018
was granted 4,483 shares of Cel SciSEC Form 42 July 2018Common Stock · traded 29 June 2018 · filed 2 July 2018
was granted 3,464 shares of Cel SciSEC Form 418 June 2018Common Stock · traded 11 June 2018 · filed 18 June 2018
was granted 3,151 shares of Cel SciSEC Form 418 June 2018Common Stock · traded 11 June 2018 · filed 18 June 2018
exercised in-the-money options over 147,929 shares of Cel Sci (a derivative holding)SEC Form 413 June 2018Convertible Note · traded 11 June 2018 · filed 13 June 2018
was granted 29,586 shares of Cel Sci (a derivative holding)SEC Form 413 June 2018Series UU Warrants · traded 11 June 2018 · filed 13 June 2018
exercised in-the-money options over 109,170 shares of Cel Sci (a derivative holding)SEC Form 413 June 2018Convertible Note (1) · traded 11 June 2018 · filed 13 June 2018
was granted 21,834 shares of Cel Sci (a derivative holding)SEC Form 413 June 2018Series UU Warrants (1) · traded 11 June 2018 · filed 13 June 2018
exercised in-the-money options over 147,929 shares of Cel SciSEC Form 413 June 2018Common Stock · traded 11 June 2018 · filed 13 June 2018
exercised in-the-money options over 109,170 shares of Cel SciSEC Form 413 June 2018Common Stock · traded 11 June 2018 · filed 13 June 2018
exercised in-the-money options over 14,760 shares of Cel SciSEC Form 45 June 2018Common Stock · traded 1 June 2018 · filed 5 June 2018
exercised in-the-money options over 369,000 shares of Cel Sci (a derivative holding)SEC Form 45 June 2018Series S Warrants · traded 1 June 2018 · filed 5 June 2018
was granted 160,121 shares of Cel Sci (a derivative holding)SEC Form 43 May 2018Options · traded 1 May 2018 · filed 3 May 2018
was granted 370,000 shares of Cel Sci (a derivative holding)SEC Form 43 May 2018Options · traded 1 May 2018 · filed 3 May 2018
was granted 2,925 shares of Cel SciSEC Form 43 April 2018Common Stock · traded 30 March 2018 · filed 3 April 2018
was granted 2,103 shares of Cel SciSEC Form 43 January 2018Common Stock · traded 29 December 2017 · filed 3 January 2018
was granted 54,585 shares of Cel Sci (a derivative holding)SEC Form 46 November 2017Series RR Warrants · traded 2 November 2017 · filed 6 November 2017
was granted 73,965 shares of Cel Sci (a derivative holding)SEC Form 46 November 2017Series RR Warrants · traded 2 November 2017 · filed 6 November 2017
was granted 2,394 shares of Cel SciSEC Form 42 October 2017Common Stock · traded 29 September 2017 · filed 2 October 2017
was granted 180,000 shares of Cel Sci (a derivative holding)SEC Form 41 August 2017Options · traded 28 July 2017 · filed 1 August 2017
was granted 109,170 shares of Cel Sci (a derivative holding)SEC Form 425 July 2017Convertible Note · traded 24 July 2017 · filed 25 July 2017
was granted 109,170 shares of Cel Sci (a derivative holding)SEC Form 425 July 2017Series NN Warrant · traded 24 July 2017 · filed 25 July 2017
was granted 1,782 shares of Cel SciSEC Form 45 July 2017Common Stock · traded 30 June 2017 · filed 5 July 2017
was granted 147,929 shares of Cel Sci (a derivative holding)SEC Form 423 June 2017Convertible Note · traded 22 June 2017 · filed 23 June 2017
was granted 147,929 shares of Cel Sci (a derivative holding)SEC Form 423 June 2017Series MM Warrants · traded 22 June 2017 · filed 23 June 2017
was granted 46,436 shares of Cel SciSEC Form 44 April 2017Commn Stock · traded 31 March 2017 · filed 4 April 2017
was granted 59,328 shares of Cel SciSEC Form 43 January 2017Common Stock · traded 30 December 2016 · filed 3 January 2017
was granted 13,250 shares of Cel SciSEC Form 43 October 2016Common Stock · traded 30 September 2016 · filed 3 October 2016
was granted 34,644 shares of Cel SciSEC Form 419 July 2016Common Stock · traded 13 July 2016 · filed 19 July 2016
was granted 8,641 shares of Cel SciSEC Form 430 June 2016Common Stock · traded 30 June 2016 · filed 30 June 2016
was granted 7,500 shares of Cel SciSEC Form 45 April 2016Common Stock · traded 31 March 2016 · filed 5 April 2016
was granted 3,000,000 shares of Cel SciSEC Form 414 January 2016Common Stock · traded 13 January 2016 · filed 14 January 2016
was granted 3,000,000 shares of Cel Sci (a derivative holding)SEC Form 414 January 2016Series X Warrant · traded 13 January 2016 · filed 14 January 2016
was granted 10,743 shares of Cel SciSEC Form 45 January 2016Common Stock · traded 31 December 2015 · filed 5 January 2016
was granted 6,625 shares of Cel SciSEC Form 430 September 2015Common Stock · traded 30 September 2015 · filed 30 September 2015
was granted 38,658 shares of Cel SciSEC Form 428 July 2015Common Stock · traded 27 July 2015 · filed 28 July 2015
was granted 6,022 shares of Cel SciSEC Form 41 July 2015Common Stock · traded 30 June 2015 · filed 1 July 2015
acquired or disposed of, other 1,871,282 shares of Cel Sci (a derivative holding)SEC Form 41 July 2015Convertible Note · traded 29 June 2015 · filed 1 July 2015
acquired or disposed of, other 2,844,627 shares of Cel Sci (a derivative holding)SEC Form 41 July 2015Warrants · traded 29 June 2015 · filed 1 July 2015
▲ bought on the open market 69,000 shares of Cel Sci (a derivative holding)SEC Form 426 May 2015Series S Warrants · traded 22 May 2015 · filed 26 May 2015
was granted 4,071 shares of Cel SciSEC Form 413 April 2015Common Stock · traded 31 March 2015 · filed 13 April 2015
was granted 6,594 shares of Cel SciSEC Form 49 January 2015Common Stock · traded 31 December 2014 · filed 9 January 2015
gave away 2,124,388 shares of Cel SciSEC Form 47 November 2014Common Stock · traded 4 November 2014 · filed 7 November 2014
gave away 2,844,627 shares of Cel Sci (a derivative holding)SEC Form 428 October 2014Warrants · traded 28 October 2014 · filed 28 October 2014
▲ bought on the open market 14,999 shares of Cel SciSEC Form 414 October 2014Common Stock · traded 13 October 2014 · filed 14 October 2014
was granted 4,203 shares of Cel SciSEC Form 41 October 2014Common Stock · traded 30 September 2014 · filed 1 October 2014
gave away 103,093 shares of Cel SciSEC Form 425 August 2014Common Stock · traded 22 August 2014 · filed 25 August 2014
gave away 276,014 shares of Cel Sci (a derivative holding)SEC Form 421 August 2014Convertible Note · traded 19 August 2014 · filed 21 August 2014
gave away 164,824 shares of Cel Sci (a derivative holding)SEC Form 421 August 2014Warrants · traded 19 August 2014 · filed 21 August 2014
gave away 184,930 shares of Cel Sci (a derivative holding)SEC Form 421 August 2014Warrants · traded 19 August 2014 · filed 21 August 2014
was granted 5,800,000 shares of Cel SciSEC Form 47 August 2014Common Stock · traded 6 August 2014 · filed 7 August 2014
was granted 3,084 shares of Cel SciSEC Form 41 July 2014Common Stock · traded 30 June 2014 · filed 1 July 2014
▲ bought on the open market 170,000 shares of Cel Sci (a derivative holding)SEC Form 47 April 2014Series S Warrants · traded 4 April 2014 · filed 7 April 2014
was granted 2,516 shares of Cel SciSEC Form 42 April 2014Common Stock · traded 31 March 2014 · filed 2 April 2014
▲ bought on the open market 100,000 shares of Cel Sci (a derivative holding)SEC Form 413 March 2014Series S Warrants · traded 12 March 2014 · filed 13 March 2014
▲ bought on the open market 30,000 shares of Cel Sci (a derivative holding)SEC Form 412 March 2014Series S Warrants · traded 11 March 2014 · filed 12 March 2014
was granted 90,000 shares of Cel Sci (a derivative holding)SEC Form 44 March 2014Options · traded 26 February 2014 · filed 4 March 2014
was granted 6,483 shares of Cel SciSEC Form 46 January 2014Common Stock · traded 31 December 2013 · filed 6 January 2014
▲ bought on the open market 300,000 shares of Cel SciSEC Form 42 January 2014Common Stock · traded 30 December 2013 · filed 2 January 2014
▲ bought on the open market 8,400 shares of Cel SciSEC Form 411 October 2013Common Stock · traded 9 October 2013 · filed 11 October 2013

Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.