David S Buzby
CIK 1244203 · View on SEC EDGAR ↗
First SEC filing: June 4, 2026 · Latest: June 4, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 8, 2022 | STEM | S | 86,121 | $9.01 | $775,950 | 3,563 Indirect | -96.03% | Disposed | -96.8% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 7, 2026 | STEM | Restricted Stock Unit | Common Stock, Par Value $0.0001 Per Share (7,486) | — | — | 7,486 | Disposed |
| June 3, 2026 | STEM | Restricted Stock Unit | Common Stock, Par Value $0.0001 Per Share (12,168) | — | — | 12,168 | Acquired |
| June 4, 2025 | STEM | Restricted Stock Unit | Common Stock, Par Value 0.0001 Per Share (149,723) | — | — | 149,723 | Acquired |
| May 29, 2025 | STEM | Restricted Stock Unit | Common Stock, Par Value 0.0001 Per Share (110,236) | — | — | 110,236 | Disposed |
| Jan. 14, 2025 | STEM | Stock Option (Right to Buy) | Common Stock, Par Value $0.0001 Per Share (66,667) | $0.84 | Jan. 13, 2035 | 66,667 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 7 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 9, 2026 | SVIVW | Class B Ordinary Shares→ Class A Ordinary Shares (40,000) | 40,000 | Direct |
| Sept. 3, 2025 | GFUZ | Class B Ordinary Shares→ Class A Ordinary Shares (40,000) | 40,000 | Direct |
| May 25, 2021 | STEM | Common Stock | 453,302 | Direct |
| May 25, 2021 | STEM | Common Stock | 89,684 | Indirect |
| May 25, 2021 | STEM | Stock Option→ Common Stock (32,978) | 32,978 | Direct |
| May 25, 2021 | STEM | Stock Option→ Common Stock (27,596) | 27,596 | Direct |
| May 25, 2021 | STEM | Stock Option→ Common Stock (189,734) | 189,734 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
STEM
CEO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $173,089 | — | — | — | — | — | — | $264,911 |
| 2024 | $289,062 | $282,787 | — | — | — | — | $11,708 | $887,557 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.