Neil Herskowitz
CIK 1298246 · View on SEC EDGAR ↗
Insider
First SEC filing: June 30, 2017 · Latest: June 30, 2017
On this page
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net:
$-237
+ 28 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
28 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 30, 2025 | MBIO | S | 247 | $0.96 | $237 | 145 Direct | -63.01% | Disposed | -41.3% (price as of 2026-08-19) |
| Nov. 23, 2018 | MBIO | P | 1,000 | $3.96 | $3,960 | 71,000 Direct | +1.43% | Acquired | -100.0% (price as of 2026-08-19) |
| Dec. 6, 2012 | TGTX | P | 1,000 | $2.00 | $2,000 | 51,265 Indirect | +1.99% | Acquired | 2454.4% (price as of 2026-08-19) |
| March 30, 2007 | TGTX | P | 19,444 | — | — | 19,444 Indirect | — | Acquired | (price as of 2026-08-19) |
| March 30, 2007 | TGTX | P | 55,555 | $0.90 | $50,000 | 77,288 Indirect | +255.63% | Acquired | -98.0% (price as of 2026-08-19) |
| July 18, 2006 | TGTX | P | 2,500 | $0.61 | $1,525 | 10,000 Direct | +33.33% | Acquired | -97.0% (price as of 2026-08-19) |
| July 13, 2006 | TGTX | P | 2,500 | $0.68 | $1,700 | 7,500 Direct | +50.00% | Acquired | -97.3% (price as of 2026-08-19) |
| July 11, 2006 | TGTX | P | 4,500 | $0.71 | $3,195 | 5,000 Direct | +900.00% | Acquired | -97.4% (price as of 2026-08-19) |
| July 10, 2006 | TGTX | P | 500 | $0.73 | $365 | 500 Direct | — | Acquired | -97.5% (price as of 2026-08-19) |
| Jan. 10, 2006 | TGTX | P | 14,200 | $1.30 | $18,460 | 21,700 Indirect | +189.33% | Acquired | -98.6% (price as of 2026-08-19) |
| April 27, 2005 | TGTX | P | 5,000 | $1.21 | $6,050 | 7,500 Indirect | +200.00% | Acquired | -98.5% (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 |
|---|---|---|---|---|---|---|---|
| March 3, 2010 | TGTX | Stock Options | Common Stock (300,000) | $0.07 | March 2, 2020 | 300,000 | Acquired |
| Sept. 11, 2008 | TGTX | Warrant | Common Stock (24,000) | $0.20 | Sept. 10, 2013 | 24,000 | Acquired |
| March 25, 2008 | TGTX | Stock Options | Common Stock (75,000) | $0.17 | March 25, 2018 | 75,000 | Acquired |
| March 30, 2007 | TGTX | Warrant | Common Stock (19,444) | $1.00 | March 30, 2012 | 19,444 | Acquired |
| Jan. 30, 2007 | TGTX | Director Stock Option [F4] | Common Stock (50,000) | $0.71 | Jan. 30, 2017 | 50,000 | Acquired |
| Aug. 26, 2005 | TGTX | Series A Convertible Preferred Stock | Common Stock (4,859) | — | — | 4,859 | Disposed |
| Jan. 11, 2005 | TGTX | Director Stock Option [F7] | Commn Stock (11,010) | $1.00 | Jan. 11, 2015 | 11,010 | Acquired |
| Sept. 27, 2004 | TGTX | Stock Options | Common Stock (80,000) | $0.97 | Sept. 27, 2014 | 80,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.