Who
Jeffrey S. Mathiesen
Director
Company insider
Files Form 4 as: Director, NeuroOne Medical Technologies; CFO and Treasurer, Solana; Director, Panbela Therapeutics; Chief Financial Officer, MetaVia; Chief Financial Officer, Nuwellis; Chief Financial Officer, Zareba Systems.
In numbers
- Trades disclosed
- 79
- Buys
- 5
- Sells
- 0
- Bought
- $71K
- Sold
- $0
- Companies
- 6
- Companies where not an officer
- 2
- First trade
- 30 Jun 2008
- Last trade
- 3 Apr 2026
- Last filed
- 7 Apr 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 3 Apr 2026filed 7 Apr 2026 | NMTC NeuroOne Medical TechnologiesMedical Devices | SEC FORM 4 Code A | —41,929 at $0.00 | filing |
| 3 Apr 2026filed 7 Apr 2026 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —26,036 at $0.00 | filing |
| 3 Apr 2026filed 7 Apr 2026 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —26,036 at $0.00 | filing |
| 3 Apr 2026filed 7 Apr 2026 | NMTC NeuroOne Medical TechnologiesMedical Devices | SEC FORM 4 Code A | —41,929 at $0.00 | filing |
| 2 Jul 2025filed 3 Jul 2025 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —26,200 at $0.00 | filing |
| 23 Jun 2025filed 25 Jun 2025 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —50,000 at $0.00 | filing |
| 14 Feb 2025filed 19 Feb 2025 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —17,025 at $0.00 | filing |
| 14 Feb 2025filed 19 Feb 2025 | NMTC NeuroOne Medical TechnologiesMedical Devices | SEC FORM 4 Code A | —27,778 at $0.00 | filing |
| 6 Jan 2025filed 8 Jan 2025 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —139,857 at $0.00 | filing |
| 2 Jul 2024filed 5 Jul 2024 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —404,000 at $0.00 | filing |
| 27 Mar 2023filed 29 Mar 2023 | Panbela Therapeuticsoption or derivative | SEC FORM 4 Code A | —8,333 at $0.00 | filing |
| 16 Mar 2023filed 20 Mar 2023 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —18,927 at $0.00 | filing |
| 16 Mar 2023filed 20 Mar 2023 | NMTC NeuroOne Medical TechnologiesMedical Devices | SEC FORM 4 Code A | —20,576 at $0.00 | filing |
| 14 Feb 2023filed 16 Feb 2023 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —2,693,000 at $0.00 | filing |
| 13 Sep 2022filed 14 Sep 2022 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —18,000 at $0.00 | filing |
| 31 May 2022filed 2 Jun 2022 | NMTC NeuroOne Medical Technologiesoption or derivative · Medical Devices | SEC FORM 4 Code A | —29,230 at $0.00 | filing |
| 31 May 2022filed 2 Jun 2022 | NMTC NeuroOne Medical TechnologiesMedical Devices | SEC FORM 4 Code A | —29,240 at $0.00 | filing |
| 23 May 2022filed 25 May 2022 | HSDT Solanaoption or derivative · Digital Asset Treasuries | SEC FORM 4 Code A | —37,000 at $0.00 | filing |
| 16 Feb 2022filed 18 Feb 2022 | HSDT SolanaDigital Asset Treasuries | SEC FORM 4 Code A | —8,011 at $0.00 | filing |
| 17 Dec 2021filed 20 Dec 2021 | HSDT SolanaDigital Asset Treasuries | SEC FORM 4 Bought | $16K3,000 at $5.31 | filing |
News
Head-To-Head Contrast: Solana (NASDAQ:HSDT) and Toast (NYSE:TOST)HSDT · dailypolitical.com · 18 Oct 2026PayPal (NASDAQ:PYPL) & Solana (NASDAQ:HSDT) Head to Head SurveyHSDT · themarketsdaily.com · 13 Oct 2026Nuwellis to Convene Pediatric Medical & Nursing Advisory Board to Advance Development of Vivian™ Pediatric CRRT SystemNUWE · manilatimes.net · 8 Oct 2026
0 headlines in the last 90 days name Jeffrey S. Mathiesen; 3 articles from the last 14 days about the 3 companies they traded most, at most three about any one of them.