THALMAN WILLIAM M
Insider
First SEC filing: March 9, 2026 · Latest: March 9, 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 |
|---|---|---|---|---|---|---|---|---|---|
| June 1, 2026 | FSTR | A | 1,128 | · | · | 79,882 Direct | +1.43% | Acquired | (price as of 2026-10-05) |
| May 22, 2026 | FSTR | F | 1,178 | $38.11 | $44,894 | 78,754 Direct | -1.47% | Disposed | -3.0% (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | F | 11,746 | $31.12 | $365,536 | 79,932 Direct | -12.81% | Disposed | 18.7% (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 6,297 | · | · | 91,678 Direct | +7.38% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 1,358 | · | · | 85,381 Direct | +1.62% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 3,651 | · | · | 84,023 Direct | +4.54% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 8,365 | · | · | 80,372 Direct | +11.62% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | F | 11,746 | $31.12 | $365,536 | 79,947 Direct | -12.81% | Disposed | 18.7% (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 6,297 | · | · | 91,693 Direct | +7.37% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 1,358 | · | · | 85,396 Direct | +1.62% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 3,651 | · | · | 84,038 Direct | +4.54% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2026 | FSTR | A | 8,365 | · | · | 80,387 Direct | +11.61% | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2026 | FSTR | F | 1,736 | $31.63 | $54,910 | 72,007 Direct | -2.35% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 14, 2026 | FSTR | F | 1,721 | $31.63 | $54,435 | 72,022 Direct | -2.33% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 14, 2026 | FSTR | F | 1,721 | $31.63 | $54,435 | 72,010 Direct | -2.33% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 13, 2026 | FSTR | F | 1,007 | $31.63 | $31,851 | 73,743 Direct | -1.35% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 13, 2026 | FSTR | F | 1,007 | $31.63 | $31,851 | 73,743 Direct | -1.35% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 13, 2026 | FSTR | F | 1,007 | $31.63 | $31,851 | 73,731 Direct | -1.35% | Disposed | 16.8% (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | M | 1,667 | $31.54 | $52,577 | 0 Direct | -100.00% | Disposed | 17.2% (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | F | 817 | $31.54 | $25,768 | 74,750 Direct | -1.08% | Disposed | 17.2% (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | M | 1,667 | · | · | 75,567 Direct | +2.26% | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | M | 1,667 | $31.54 | $52,577 | 0 Direct | -100.00% | Disposed | 17.2% (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | F | 829 | $31.54 | $26,147 | 74,738 Direct | -1.10% | Disposed | 17.2% (price as of 2026-10-05) |
| Feb. 11, 2026 | FSTR | M | 1,667 | · | · | 75,567 Direct | +2.26% | Acquired | (price as of 2026-10-05) |
| May 23, 2025 | FSTR | F | 898 | $18.18 | $16,326 | 73,900 Direct | -1.20% | Disposed | 103.2% (price as of 2026-10-05) |
| May 22, 2025 | FSTR | A | 8,085 | · | · | 74,798 Direct | +12.12% | Acquired | (price as of 2026-10-05) |
| Feb. 20, 2025 | FSTR | F | 4,884 | $27.65 | $135,043 | 66,713 Direct | -6.82% | Disposed | 33.6% (price as of 2026-10-05) |
| Feb. 20, 2025 | FSTR | A | 2,385 | · | · | 71,597 Direct | +3.45% | Acquired | (price as of 2026-10-05) |
| Feb. 20, 2025 | FSTR | A | 8,577 | · | · | 69,212 Direct | +14.15% | Acquired | (price as of 2026-10-05) |
| Feb. 20, 2025 | FSTR | A | 4,786 | · | · | 60,635 Direct | +8.57% | Acquired | (price as of 2026-10-05) |
| Feb. 17, 2025 | FSTR | F | 1,027 | $27.50 | $28,242 | 55,849 Direct | -1.81% | Disposed | 34.4% (price as of 2026-10-05) |
| Feb. 14, 2025 | FSTR | F | 1,930 | $27.50 | $53,075 | 56,876 Direct | -3.28% | Disposed | 34.4% (price as of 2026-10-05) |
| Aug. 8, 2024 | FSTR | P | 2,500 | $16.79 | $41,975 | 58,806 Direct | +4.44% | Acquired | 120.1% (price as of 2026-10-05) |
| May 23, 2024 | FSTR | A | 6,163 | · | · | 56,306 Direct | +12.29% | Acquired | (price as of 2026-10-05) |
| April 5, 2024 | FSTR | M | 1,666 | $27.17 | $45,265 | 1,667 Direct | -49.98% | Disposed | 36.0% (price as of 2026-10-05) |
| April 5, 2024 | FSTR | F | 715 | $27.17 | $19,427 | 50,143 Direct | -1.41% | Disposed | 36.0% (price as of 2026-10-05) |
| April 5, 2024 | FSTR | M | 1,666 | · | · | 50,858 Direct | +3.39% | Acquired | (price as of 2026-10-05) |
| March 1, 2024 | FSTR | F | 2,164 | $23.78 | $51,460 | 49,192 Direct | -4.21% | Disposed | 55.4% (price as of 2026-10-05) |
| Feb. 26, 2024 | FSTR | F | 842 | $23.40 | $19,703 | 51,356 Direct | -1.61% | Disposed | 57.9% (price as of 2026-10-05) |
| Feb. 17, 2024 | FSTR | F | 985 | $24.00 | $23,640 | 52,198 Direct | -1.85% | Disposed | 54.0% (price as of 2026-10-05) |
| Feb. 14, 2024 | FSTR | F | 1,847 | $24.00 | $44,328 | 53,183 Direct | -3.36% | Disposed | 54.0% (price as of 2026-10-05) |
| Feb. 13, 2024 | FSTR | A | 9,942 | · | · | 55,030 Direct | +22.05% | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2024 | FSTR | A | 3,874 | · | · | 45,088 Direct | +9.40% | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2024 | FSTR | F | 1,144 | $23.76 | $27,181 | 41,214 Direct | -2.70% | Disposed | 55.5% (price as of 2026-10-05) |
| Feb. 13, 2024 | FSTR | A | 2,377 | · | · | 42,358 Direct | +5.95% | Acquired | (price as of 2026-10-05) |
| March 1, 2023 | FSTR | F | 2,144 | $12.46 | $26,714 | 39,981 Direct | -5.09% | Disposed | 196.5% (price as of 2026-10-05) |
| Feb. 26, 2023 | FSTR | F | 842 | $12.80 | $10,778 | 42,125 Direct | -1.96% | Disposed | 188.7% (price as of 2026-10-05) |
| Feb. 17, 2023 | FSTR | F | 1,088 | $12.81 | $13,937 | 42,967 Direct | -2.47% | Disposed | 188.4% (price as of 2026-10-05) |
| Feb. 14, 2023 | FSTR | A | 11,814 | · | · | 41,537 Direct | +39.75% | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2023 | FSTR | A | 2,518 | · | · | 44,055 Direct | +6.06% | Acquired | (price as of 2026-10-05) |
| Dec. 12, 2022 | FSTR | P | 2,000 | $9.21 | $18,420 | 29,723 Direct | +7.21% | Acquired | 301.2% (price as of 2026-10-05) |
| Sept. 12, 2022 | FSTR | P | 3,000 | $12.36 | $37,080 | 27,723 Direct | +12.13% | Acquired | 198.9% (price as of 2026-10-05) |
| March 1, 2022 | FSTR | F | 2,150 | $14.73 | $31,670 | 24,723 Direct | -8.00% | Disposed | 150.8% (price as of 2026-10-05) |
| Feb. 26, 2022 | FSTR | F | 808 | $15.21 | $12,290 | 26,873 Direct | -2.92% | Disposed | 142.9% (price as of 2026-10-05) |
| Feb. 17, 2022 | FSTR | A | 6,906 | · | · | 27,681 Direct | +33.24% | Acquired | (price as of 2026-10-05) |
| March 1, 2021 | FSTR | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 1, 2021 | FSTR | A | 5,775 | · | · | 20,775 Direct | +38.50% | Acquired | (price as of 2026-10-05) |
| March 1, 2021 | FSTR | A | 3,333 | · | · | 3,333 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 22, 2003 | WCC | A | 10,000 | $5.90 | $59,000 | 10,000 Direct | · | Acquired | 6291.4% (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 11, 2026 | FSTR | Performance Stock Units | Common Stock | · | Feb. 28, 2026 | 1,667 | Disposed |
| Feb. 11, 2026 | FSTR | Performance Stock Units | Common Stock | · | Feb. 28, 2026 | 1,667 | Disposed |
| April 5, 2024 | FSTR | Performance Stock Units | Common Stock | · | Feb. 28, 2026 | 1,666 | Disposed |
| March 1, 2021 | FSTR | Performance Stock Units | Common Stock | · | Feb. 28, 2026 | 3,333 | Acquired |
| Aug. 22, 2003 | WCC | Option for WESCO International Common Stock | WESCO International Common Stock | $5.90 | Aug. 22, 2013 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 2, 2021 | FSTR | Common Stock, $1.00 par value per share | 0 | Direct |