Graham Walmsley
CIK 1777517 · View on SEC EDGAR ↗
Insider
Activist
First SEC filing: Nov. 18, 2020 · Latest: Oct. 15, 2025
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 15 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
15 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 17, 2024 | OLMA | P | 700,761 | $6.75 | $4,730,137 | 1,408,875 Indirect | -33.22% | Disposed | 62.2% (price as of 2026-08-20) |
| Dec. 17, 2024 | OLMA | S | 700,761 | $6.75 | $4,730,137 | 0 Indirect | -100.00% | Disposed | 62.2% (price as of 2026-08-20) |
| Dec. 13, 2024 | OLMA | P | 700,761 | $6.75 | $4,730,137 | 700,761 Indirect | — | Acquired | 62.2% (price as of 2026-08-20) |
| Dec. 13, 2024 | OLMA | S | 700,761 | $6.75 | $4,730,137 | 0 Indirect | -100.00% | Disposed | 62.2% (price as of 2026-08-20) |
| June 4, 2024 | OLMA | S | 475,000 | $14.85 | $7,053,750 | 708,114 Indirect | -40.15% | Disposed | -26.3% (price as of 2026-08-20) |
| June 4, 2024 | OLMA | S | 700,000 | $14.85 | $10,395,000 | 700,761 Indirect | -49.97% | Disposed | -26.3% (price as of 2026-08-20) |
| June 4, 2024 | OLMA | S | 475,000 | $14.85 | $7,053,750 | 708,114 Indirect | -40.15% | Disposed | -26.3% (price as of 2026-08-20) |
| June 4, 2024 | OLMA | S | 700,000 | $14.85 | $10,395,000 | 700,761 Indirect | -49.97% | Disposed | -26.3% (price as of 2026-08-20) |
| Dec. 5, 2023 | OLMA | P | 50,000 | $13.08 | $654,000 | 1,800,000 Indirect | +2.86% | Acquired | -16.3% (price as of 2026-08-20) |
| Dec. 5, 2023 | OLMA | P | 50,000 | $14.95 | $747,500 | 1,750,000 Indirect | +2.94% | Acquired | -26.8% (price as of 2026-08-20) |
| Dec. 5, 2023 | OLMA | P | 31,870 | $14.73 | $469,445 | 1,700,000 Indirect | +1.91% | Acquired | -25.7% (price as of 2026-08-20) |
| Sept. 12, 2023 | OLMA | P | 508,130 | $9.84 | $4,999,999 | 1,668,130 Indirect | +43.80% | Acquired | 11.3% (price as of 2026-08-20) |
| Dec. 14, 2020 | ALXO | P | 20,000 | $76.00 | $1,520,000 | 995,000 Indirect | +2.05% | Acquired | -97.4% (price as of 2026-08-20) |
| Nov. 23, 2020 | OLMA | P | 1,160,000 | $19.00 | $22,040,000 | 1,160,000 Indirect | — | Acquired | -42.4% (price as of 2026-08-20) |
| Sept. 30, 2020 | OLMA | P | 1,183,114 | $11.06 | $13,085,241 | 1,183,114 Indirect | — | Acquired | -1.0% (price as of 2026-08-20) |
| July 21, 2020 | ALXO | P | 975,000 | $19.00 | $18,525,000 | 975,000 Indirect | — | Acquired | -89.4% (price as of 2026-08-20) |
| June 1, 2020 | OLMA | P | 339,578 | $4.71 | $1,599,412 | 1,400,761 Indirect | +32.00% | Acquired | 132.5% (price as of 2026-08-20) |
| June 1, 2020 | OLMA | P | 339,578 | $4.71 | $1,599,412 | 339,578 Indirect | — | Acquired | 132.5% (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 |
|---|---|---|---|---|---|---|---|
| June 18, 2026 | OLMA | Stock Option (right to buy) | Common Stock (29,500) | $9.51 | June 18, 2036 | 29,500 | Acquired |
| June 17, 2022 | OLMA | Stock Option (right to buy) | Common Stock (21,520) | — | June 16, 2032 | 21,520 | Acquired |
| June 16, 2022 | OLMA | Stock Option (right to buy) | Common Stock (21,520) | $3.43 | June 15, 2032 | 21,520 | Acquired |
| June 11, 2021 | ALXO | Stock option (right to buy) | Common Stock (12,004) | $59.66 | June 10, 2031 | 12,004 | Acquired |
| June 9, 2021 | OLMA | Stock Option (right to buy) | Common Stock (21,520) | $27.66 | June 8, 2031 | 21,520 | Acquired |
| Nov. 23, 2020 | OLMA | Series B Convertible Preferred Stock | Common Stock (1,400,761) | — | — | 1,400,761 | Disposed |
| Nov. 23, 2020 | OLMA | Series C Convertible Preferred Stock | Common Stock (1,183,114) | — | — | 1,183,114 | Disposed |
| Nov. 18, 2020 | OLMA | Stock Option (Right to Buy) | Common Stock (21,520) | $19.00 | Nov. 17, 2030 | 21,520 | Acquired |
| Nov. 18, 2020 | OLMA | Stock Option (Right to Buy) | Common Stock (21,520) | $19.00 | Nov. 17, 2030 | 21,520 | Acquired |
| Nov. 18, 2020 | OLMA | Stock Option (Right to Buy) | Common Stock (21,520) | $19.00 | Nov. 17, 2030 | 21,520 | Acquired |
| Sept. 30, 2020 | OLMA | Series C Convertible Preferred Stock | Common Stock (1,183,114) | — | — | 1,183,114 | Acquired |
| July 21, 2020 | ALXO | Series C Convertible Preferred Stock | Common Stock (2,105,901) | — | — | 2,105,901 | Disposed |
| July 16, 2020 | ALXO | Stock Option (right to buy) | Common Stock (24,009) | $19.00 | July 16, 2030 | 24,009 | Acquired |
| June 1, 2020 | OLMA | Series B Convertible Preferred Stock | Common Stock (339,578) | — | — | 339,578 | Acquired |
| June 1, 2020 | OLMA | Series B Convertible Preferred Stock | Common Stock (339,578) | — | — | 339,578 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 18, 2020 | OLMA | Series B Convertible Preferred Stock→ Common Stock (1,400,761) | 1,400,761 | Indirect |
| Nov. 18, 2020 | OLMA | Series C Convertible Preferred Stock→ Common Stock (1,183,114) | 1,183,114 | Indirect |
| July 16, 2020 | ALXO | Series C Convertible Preferred Stock→ Common Stock (2,105,901) | 2,105,901 | Indirect |