William H Baum
CIK 1231857 · View on SEC EDGAR ↗
Insider
First SEC filing: May 29, 2026 · Latest: May 29, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
4 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 23, 2023 | GEVO | S | 8,236 | $1.38 | $11,366 | 218,679 Direct | -3.63% | Disposed | 11.6% (price as of 2026-08-19) |
| Aug. 22, 2022 | GEVO | S 10b5-1 | 11,531 | $3.08 | $35,515 | 126,108 Direct | -8.38% | Disposed | -50.0% (price as of 2026-08-19) |
| July 7, 2022 | GEVO | S 10b5-1 | 17,803 | $2.53 | $45,042 | 137,639 Direct | -11.45% | Disposed | -39.1% (price as of 2026-08-19) |
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 (80,893) | $1.80 | May 26, 2036 | 80,893 | Acquired |
| May 23, 2024 | GEVO | Stock Option | Common Stock (224,639) | $0.67 | May 22, 2034 | 224,639 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).