Who
David S. Buzby
Director
Company insider
Files Form 4 as: Executive Chair of the Board, Stem; Director, Spring Valley Acquisition Corp. II; Director, Conversant; Director, Eco2 Plastics.
In numbers
- Trades disclosed
- 114
- Buys
- 13
- Sells
- 7
- Bought
- $1.5M
- Sold
- $8.5M
- Companies
- 4
- Companies where not an officer
- 3
- First trade
- 15 Jun 2006
- Last trade
- 7 Aug 2026
- Last filed
- 11 Aug 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 | |
|---|---|---|---|---|
| 7 Aug 2026filed 11 Aug 2026 | STEM StemIT Services & Consulting | SEC FORM 4 Code M | —7,486 | filing |
| 7 Aug 2026filed 11 Aug 2026 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code M | —7,486 at $0.00 | filing |
| 7 Aug 2026filed 11 Aug 2026 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code M | —7,486 at $0.00 | filing |
| 7 Aug 2026filed 11 Aug 2026 | STEM StemIT Services & Consulting | SEC FORM 4 Code M | —7,486 | filing |
| 3 Jun 2026filed 4 Jun 2026 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —12,168 at $0.00 | filing |
| 3 Jun 2026filed 4 Jun 2026 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —12,168 at $0.00 | filing |
| 24 Feb 2026filed 26 Feb 2026 | Spring Valley Acquisition Corp. IIDiversified & Base Metal Miners | SEC FORM 4 Code D | —40,000 | filing |
| 24 Feb 2026filed 26 Feb 2026 | Spring Valley Acquisition Corp. II | SEC FORM 4 Code D | —40,000 | filing |
| 3 Jul 2025filed 8 Jul 2025 | STEM StemIT Services & Consulting | SEC FORM 4 Code G | —5,511 at $0.00 | filing |
| 3 Jul 2025filed 8 Jul 2025 | STEM StemIT Services & Consulting | SEC FORM 4 Code G | —5,511 at $0.00 | filing |
| 4 Jun 2025filed 6 Jun 2025 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —149,723 at $0.00 | filing |
| 29 May 2025filed 2 Jun 2025 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code M | —110,236 at $0.00 | filing |
| 29 May 2025filed 2 Jun 2025 | STEM StemIT Services & Consulting | SEC FORM 4 Code M | —110,236 at $0.00 | filing |
| 14 Jan 2025filed 16 Jan 2025 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —66,667 at $0.00 | filing |
| 28 Aug 2024filed 30 Aug 2024 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —400,000 at $0.00 | filing |
| 7 Jun 2024filed 10 Jun 2024 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code M | —23,489 at $0.00 | filing |
| 7 Jun 2024filed 10 Jun 2024 | STEM StemIT Services & Consulting | SEC FORM 4 Code M | —23,489 at $0.00 | filing |
| 29 May 2024filed 30 May 2024 | STEM Stemoption or derivative · IT Services & Consulting | SEC FORM 4 Code A | —110,236 at $0.00 | filing |
| 18 Mar 2024filed 10 Jun 2024 | STEM StemIT Services & Consulting | SEC FORM 4 Bought | $61K33,800 at $1.81 | filing |
| 18 Mar 2024filed 20 Mar 2024 | STEM StemIT Services & Consulting | SEC FORM 4 Bought | $61K33,800 at $1.81 | filing |
News
No headline names them, or the companies they trade most, lately.