Michael S Weiss
CIK 1038977 · View on SEC EDGAR ↗
First SEC filing: Dec. 31, 2020 · Latest: April 6, 2023
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 14, 2023 | FBIOP | P | 147,058 | — | — | 147,058 Direct | — | Acquired | (price as of 2026-08-20) |
| Nov. 14, 2023 | FBIOP | P | 147,058 | $1.70 | $249,999 | 1,130,520 Direct | +14.95% | Acquired | 965.3% (price as of 2026-08-20) |
| Aug. 11, 2023 | TGTX | P | 100,000 | $10.13 | $1,013,000 | 12,073,021 Direct | +0.84% | Acquired | 417.3% (price as of 2026-08-20) |
| Feb. 10, 2023 | FBIOP | P | 1,197,604 | $0.84 | $1,005,987 | 14,752,034 Direct | +8.84% | Acquired | 2056.0% (price as of 2026-08-20) |
| Jan. 5, 2022 | TGTX | S | 30,671 | $18.31 | $561,586 | 10,988,021 Direct | -0.28% | Disposed | 186.2% (price as of 2026-08-20) |
| Jan. 4, 2022 | TGTX | S | 37,549 | $19.20 | $720,941 | 13,455,697 Direct | -0.28% | Disposed | 172.9% (price as of 2026-08-20) |
| Dec. 16, 2014 | TGTX | S | 210,618 | $16.44 | $3,462,560 | 8,120,773 Direct | -2.53% | Disposed | 218.7% (price as of 2026-08-20) |
| Nov. 6, 2014 | FBIOP | P | 1,000,000 | $1.61 | $1,610,000 | 6,938,038 Direct | +16.84% | Acquired | 1024.8% (price as of 2026-08-20) |
| Dec. 11, 2013 | TGTX | P | 10,000 | $3.43 | $34,300 | 7,839,471 Direct | +0.13% | Acquired | 1427.7% (price as of 2026-08-20) |
| Sept. 11, 2012 | TGTX | P | 100,000 | $2.25 | $225,000 | 7,342,728 Direct | +1.38% | Acquired | 2228.9% (price as of 2026-08-20) |
| Sept. 10, 2012 | TGTX | P | 50,000 | $2.25 | $112,500 | 7,242,728 Direct | +0.70% | Acquired | 2228.9% (price as of 2026-08-20) |
| May 16, 2012 | TGTX | P | 1,500 | $6.25 | $9,375 | 5,192,728 Direct | +0.03% | Acquired | 738.4% (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 |
|---|---|---|---|---|---|---|---|
| Nov. 14, 2023 | FBIOP | Warrants to purchase Common Stock | Common Stock (147,058) | $1.70 | Nov. 14, 2028 | 147,058 | Acquired |
| July 20, 2022 | TGTX | Stock Option (right to buy) | Common Stock, par value $0.001 (1,900,000) | $7.00 | July 20, 2027 | 1,900,000 | Acquired |
| Dec. 19, 2013 | FBIOP | Options to purchase Common Stock | Common Stock (30,000) | $2.10 | Dec. 19, 2023 | 30,000 | Acquired |
| April 30, 2012 | TGTX | SERIES A PREFERRED STOCK | Common Stock (396,513) | — | — | 396,513 | Disposed |
| Oct. 10, 2008 | XTLB | OPTIONS TO PURCHASE ORDINARY SHARES | ORDINARY SHARES (3,500,000) | $0.20 | Oct. 10, 2018 | 3,500,000 | Acquired |
| Dec. 30, 2007 | XTLB | OPTIONS TO PURCHASE ORDINARY SHARES | ORDINARY SHARES (3,083,333) | $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→ Common Stock (500,000) | 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]→ Common Stock (1,875,000) | 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 |
FBIOP
Executive Vice Chairman, Strategic Development| 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.