Michael S Weiss
Insider
First SEC filing: Dec. 31, 2020 · Latest: April 6, 2023
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 18, 2026 | FBIOP | A | 475,424 | · | · | 2,276,562 Direct | +26.40% | Acquired | (price as of 2026-10-05) |
| Jan. 8, 2026 | TGTX | A | 622,000 | · | · | 9,778,086 Direct | +6.79% | Acquired | (price as of 2026-10-05) |
| Nov. 5, 2025 | TGTX | G | 3,865,126 | · | · | 9,959,803 Direct | -27.96% | Disposed | (price as of 2026-10-05) |
| Nov. 5, 2025 | TGTX | G | 803,717 | · | · | 9,156,086 Direct | -8.07% | Disposed | (price as of 2026-10-05) |
| Jan. 29, 2025 | TGTX | A | 750,000 | · | · | 13,824,929 Direct | +5.74% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2025 | FBIOP | A | 454,153 | · | · | 1,801,138 Direct | +33.72% | Acquired | (price as of 2026-10-05) |
| Jan. 6, 2024 | TGTX | A | 1,001,908 | · | · | 13,074,929 Direct | +8.30% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2024 | FBIOP | A | 216,465 | · | · | 1,346,985 Direct | +19.15% | Acquired | (price as of 2026-10-05) |
| Nov. 14, 2023 | FBIOP | P | 147,058 | · | · | 147,058 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 14, 2023 | FBIOP | P | 147,058 | $1.70 | $249,999 | 1,130,520 Direct | +14.95% | Acquired | 964.7% (price as of 2026-10-05) |
| Aug. 11, 2023 | TGTX | P | 100,000 | $10.13 | $1,013,000 | 12,073,021 Direct | +0.84% | Acquired | 432.2% (price as of 2026-10-05) |
| July 5, 2023 | MBIO | A | 7,246 | · | · | 49,637 Indirect | +17.09% | Acquired | (price as of 2026-10-05) |
| March 12, 2023 | TGTX | A | 985,000 | · | · | 11,973,021 Direct | +8.96% | Acquired | (price as of 2026-10-05) |
| Feb. 10, 2023 | FBIOP | P | 1,197,604 | $0.84 | $1,005,987 | 14,752,034 Direct | +8.84% | Acquired | 2054.8% (price as of 2026-10-05) |
| Jan. 1, 2023 | FBIOP | A | 1,219,294 | · | · | 13,554,430 Direct | +9.88% | Acquired | (price as of 2026-10-05) |
| July 29, 2022 | MBIO | A | 71,664 | · | · | 135,861 Indirect | +111.63% | Acquired | (price as of 2026-10-05) |
| July 20, 2022 | TGTX | A | 1,900,000 | · | · | 1,900,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2022 | TGTX | S | 30,671 | $18.31 | $561,586 | 10,988,021 Direct | -0.28% | Disposed | 194.4% (price as of 2026-10-05) |
| Jan. 4, 2022 | TGTX | S | 37,549 | $19.20 | $720,941 | 13,455,697 Direct | -0.28% | Disposed | 180.8% (price as of 2026-10-05) |
| Jan. 1, 2022 | FBIOP | A | 1,102,986 | · | · | 12,335,136 Direct | +9.82% | Acquired | (price as of 2026-10-05) |
| Dec. 29, 2021 | TGTX | A | 56,394 | · | · | 13,493,246 Direct | +0.42% | Acquired | (price as of 2026-10-05) |
| Dec. 16, 2021 | TGTX | G | 9,000 | · | · | 13,436,852 Direct | -0.07% | Disposed | (price as of 2026-10-05) |
| Dec. 16, 2021 | TGTX | G | 700,000 | · | · | 13,445,852 Direct | -4.95% | Disposed | (price as of 2026-10-05) |
| Dec. 15, 2021 | TGTX | G | 3,000 | · | · | 14,145,852 Direct | -0.02% | Disposed | (price as of 2026-10-05) |
| June 28, 2021 | MBIO | A | 13,774 | · | · | 64,197 Indirect | +27.32% | Acquired | (price as of 2026-10-05) |
| June 18, 2021 | TGTX | A | 1,080,770 | · | · | 14,148,852 Direct | +8.27% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2021 | FBIOP | A | 1,030,339 | · | · | 11,232,150 Direct | +10.10% | Acquired | (price as of 2026-10-05) |
| July 14, 2020 | MBIO | A | 16,611 | · | · | 50,423 Direct | +49.13% | Acquired | (price as of 2026-10-05) |
| June 22, 2020 | TGTX | A | 1,556,029 | · | · | 14,434,214 Indirect | +12.08% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2020 | FBIOP | A | 801,536 | · | · | 10,201,811 Direct | +8.53% | Acquired | (price as of 2026-10-05) |
| Aug. 28, 2019 | MBIO | A | 13,812 | · | · | 33,812 Direct | +69.06% | Acquired | (price as of 2026-10-05) |
| June 26, 2019 | TGTX | P | 50,000 | $7.04 | $352,000 | 12,878,185 Indirect | +0.39% | Acquired | 665.8% (price as of 2026-10-05) |
| June 13, 2019 | TGTX | A | 1,179,380 | · | · | 12,828,185 Indirect | +10.12% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2019 | FBIOP | A | 648,204 | · | · | 9,400,275 Direct | +7.41% | Acquired | (price as of 2026-10-05) |
| July 3, 2018 | FBIOP | A | 164,473 | · | · | 8,752,071 Direct | +1.92% | Acquired | (price as of 2026-10-05) |
| June 26, 2018 | TGTX | A | 1,018,011 | · | · | 11,648,805 Indirect | +9.58% | Acquired | (price as of 2026-10-05) |
| June 14, 2018 | MBIO | A | 10,000 | · | · | 20,000 Direct | +100.00% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2018 | FBIOP | A | 586,428 | · | · | 8,587,598 Direct | +7.33% | Acquired | (price as of 2026-10-05) |
| June 19, 2017 | TGTX | G | 350,000 | · | · | 9,795,917 Direct | -3.45% | Disposed | (price as of 2026-10-05) |
| June 19, 2017 | TGTX | A | 834,877 | · | · | 10,630,794 Indirect | +8.52% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2017 | FBIOP | A | 552,698 | · | · | 8,001,170 Direct | +7.42% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2017 | TGTX | D | 3,381,866 | · | · | 6,073,796 Direct | -35.77% | Disposed | (price as of 2026-10-05) |
| Jan. 1, 2017 | TGTX | A | 2,960,000 | · | · | 9,033,796 Indirect | +48.73% | Acquired | (price as of 2026-10-05) |
| Jan. 1, 2017 | TGTX | A | 418,371 | · | · | 9,452,167 Direct | +4.63% | Acquired | (price as of 2026-10-05) |
| Dec. 30, 2016 | TGTX | A | 693,750 | · | · | 10,145,917 Indirect | +7.34% | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2016 | TGTX | G | 328,764 | · | · | 9,455,662 Direct | -3.36% | Disposed | (price as of 2026-10-05) |
| Jan. 1, 2016 | FBIOP | A | 510,434 | · | · | 7,448,472 Direct | +7.36% | Acquired | (price as of 2026-10-05) |
| Dec. 31, 2015 | TGTX | A | 672,343 | · | · | 9,398,976 Direct | +7.70% | Acquired | (price as of 2026-10-05) |
| Dec. 31, 2015 | TGTX | A | 6,723,443 | · | · | 9,398,976 Direct | +251.29% | Acquired | (price as of 2026-10-05) |
| June 4, 2015 | TGTX | A | 337,257 | · | · | 8,726,633 Direct | +4.02% | Acquired | (price as of 2026-10-05) |
| Dec. 30, 2014 | TGTX | A | 268,603 | · | · | 8,389,376 Direct | +3.31% | Acquired | (price as of 2026-10-05) |
| Dec. 16, 2014 | TGTX | S | 210,618 | $16.44 | $3,462,560 | 8,120,773 Direct | -2.53% | Disposed | 227.9% (price as of 2026-10-05) |
| Nov. 6, 2014 | FBIOP | P | 1,000,000 | $1.61 | $1,610,000 | 6,938,038 Direct | +16.84% | Acquired | 1024.2% (price as of 2026-10-05) |
| Feb. 20, 2014 | FBIOP | A | 3,958,692 | · | · | 5,938,038 Direct | +200.00% | Acquired | (price as of 2026-10-05) |
| Dec. 30, 2013 | TGTX | A | 491,920 | · | · | 8,331,391 Direct | +6.27% | Acquired | (price as of 2026-10-05) |
| Dec. 19, 2013 | FBIOP | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 19, 2013 | FBIOP | A | 1,979,346 | · | · | 1,979,346 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 11, 2013 | TGTX | P | 10,000 | $3.43 | $34,300 | 7,839,471 Direct | +0.13% | Acquired | 1471.7% (price as of 2026-10-05) |
| Dec. 28, 2012 | TGTX | A | 86,743 | · | · | 7,829,471 Direct | +1.12% | Acquired | (price as of 2026-10-05) |
| Dec. 28, 2012 | TGTX | A | 400,000 | · | · | 7,742,728 Direct | +5.45% | Acquired | (price as of 2026-10-05) |
| Sept. 11, 2012 | TGTX | P | 100,000 | $2.25 | $225,000 | 7,342,728 Direct | +1.38% | Acquired | 2296.0% (price as of 2026-10-05) |
| Sept. 10, 2012 | TGTX | P | 50,000 | $2.25 | $112,500 | 7,242,728 Direct | +0.70% | Acquired | 2296.0% (price as of 2026-10-05) |
| May 16, 2012 | TGTX | P | 1,500 | $6.25 | $9,375 | 5,192,728 Direct | +0.03% | Acquired | 762.6% (price as of 2026-10-05) |
| May 16, 2012 | TGTX | A | 1,500,000 | · | · | 5,191,228 Direct | +40.64% | Acquired | (price as of 2026-10-05) |
| April 30, 2012 | TGTX | C | 396,513 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 30, 2012 | TGTX | C | 3,524,560 | · | · | 3,691,228 Direct | +2114.72% | Acquired | (price as of 2026-10-05) |
| Oct. 10, 2008 | XTLB | A | 3,500,000 | $0.20 | $700,000 | 3,500,000 Direct | · | Acquired | -94.6% (price as of 2026-10-05) |
| Dec. 30, 2007 | XTLB | G | 3,083,333 | $0.36 | $1,110,000 | 9,666,667 Direct | -24.18% | Disposed | -97.0% (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 |
|---|---|---|---|---|---|---|---|
| Nov. 14, 2023 | FBIOP | Warrants to purchase Common Stock | Common Stock | $1.70 | Nov. 14, 2028 | 147,058 | Acquired |
| July 20, 2022 | TGTX | Stock Option (right to buy) | Common Stock, par value $0.001 | $7.00 | July 20, 2027 | 1,900,000 | Acquired |
| Dec. 19, 2013 | FBIOP | Options to purchase Common Stock | Common Stock | $2.10 | Dec. 19, 2023 | 30,000 | Acquired |
| April 30, 2012 | TGTX | SERIES A PREFERRED STOCK | Common Stock | · | · | 396,513 | Disposed |
| Oct. 10, 2008 | XTLB | OPTIONS TO PURCHASE ORDINARY SHARES | ORDINARY SHARES | $0.20 | Oct. 10, 2018 | 3,500,000 | Acquired |
| Dec. 30, 2007 | XTLB | OPTIONS TO PURCHASE ORDINARY SHARES | ORDINARY SHARES | $0.36 | Aug. 1, 2010 | 3,083,333 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 6, 2023 | MBIO | Warrants to Purchase Shares of Common Stock | 500,000 | Direct |
| July 20, 2017 | MBIO | Common Stock (Restricted) | 10,000 | Indirect |
| June 30, 2017 | MBIO | Common Stock (Restricted) | 60,000 | Indirect |
| Dec. 23, 2013 | FBIOP | No securities beneficially owned | 0 | Direct |
| Jan. 9, 2012 | TGTX | Common Stock | 7,500,000 | Direct |
| Jan. 9, 2012 | TGTX | Series A Preferred Stock [F1] | 112,500 | Direct |
| Jan. 9, 2012 | TGTX | Series A Preferred Stock [F1,F3] | 284,013 | Indirect |
| Jan. 9, 2012 | TGTX | Warrants to purchase Common Stock [F2] | 1,875,000 | Direct |
| Aug. 26, 2008 | XTLB | OPTIONS TO PURCHASE ORDINARY SHARES | 9,250,000 | Direct |
| Aug. 26, 2008 | XTLB | AMERICAN DEPOSITORY RECEIPTS REPRESENTING 10 ORDINARY SHARES | 25,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2021 | $1,289,985 | · | · | · | $783,125 | · | · | $42,666,831 |
| 2020 | $1,392,470 | · | · | · | $233,153 | · | · | $32,497,238 |
| 2019 | $636,500 | · | $8,397,186 | · | $191,040 | · | · | $12,674,726 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2017 | $30,579 | · | $2,039,285 | · | · | · | $120 | $2,069,989 |
| 2016 | $29,689 | · | $1,504,285 | · | $500,000 | · | $15 | $2,153,989 |
| 2015 | $28,275 | · | $2,538,452 | · | $500,000 | · | · | $3,066,727 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.