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William H Baum
Insider
First SEC filing: May 29, 2026 · Latest: May 29, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 |
|---|---|---|---|---|---|---|---|---|---|
| May 27, 2026 | GEVO | A | 80,893 | · | · | 80,893 Direct | · | Acquired | (price as of 2026-10-02) |
| May 22, 2025 | GEVO | A | 134,517 | · | · | 134,517 Direct | · | Acquired | (price as of 2026-10-02) |
| May 23, 2024 | GEVO | A | 224,639 | · | · | 224,639 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 23, 2023 | GEVO | S | 8,236 | $1.38 | $11,366 | 218,679 Direct | -3.63% | Disposed | -5.1% (price as of 2026-10-02) |
| May 23, 2023 | GEVO | A | 100,807 | · | · | 226,915 Direct | +79.94% | Acquired | (price as of 2026-10-02) |
| Aug. 22, 2022 | GEVO | S 10b5-1 | 11,531 | $3.08 | $35,515 | 126,108 Direct | -8.38% | Disposed | -57.5% (price as of 2026-10-02) |
| July 7, 2022 | GEVO | S 10b5-1 | 17,803 | $2.53 | $45,042 | 137,639 Direct | -11.45% | Disposed | -48.2% (price as of 2026-10-02) |
| June 3, 2022 | GEVO | A | 27,353 | · | · | 155,442 Direct | +21.35% | Acquired | (price as of 2026-10-02) |
| March 24, 2022 | GEVO | S | 90,000 | $4.40 | $396,000 | 128,089 Direct | -41.27% | Disposed | -70.2% (price as of 2026-10-02) |
| Aug. 20, 2021 | GEVO | A | 65,886 | · | · | 218,089 Direct | +43.29% | Acquired | (price as of 2026-10-02) |
| Aug. 20, 2021 | GEVO | A | 65,885 | · | · | 65,885 Direct | · | Acquired | (price as of 2026-10-02) |
| July 6, 2020 | GEVO | A | 101,729 | · | · | 152,203 Direct | +201.55% | Acquired | (price as of 2026-10-02) |
| June 24, 2019 | GEVO | A | 39,474 | · | · | 50,474 Direct | +358.85% | Acquired | (price as of 2026-10-02) |
| Aug. 9, 2018 | GEVO | A | 11,000 | · | · | 11,000 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| May 27, 2026 | GEVO | Stock Option | Common Stock | $1.80 | May 26, 2036 | 80,893 | Acquired |
| May 22, 2025 | GEVO | Stock Option | Common Stock | $1.08 | May 22, 2035 | 134,517 | Acquired |
| May 23, 2024 | GEVO | Stock Option | Common Stock | $0.67 | May 22, 2034 | 224,639 | Acquired |
| Aug. 20, 2021 | GEVO | Stock Option | Common Stock | $4.98 | Aug. 19, 2031 | 65,885 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).