Donald G Drapkin
CIK 1046705 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 12, 2007 · Latest: Feb. 12, 2007
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 7 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 19, 2006 | SIGA | A | 10,000 | — | — | 1,523,326 Direct | +0.66% | Acquired | (price as of 2026-08-20) |
| Feb. 2, 2006 | NEPH | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-20) |
| April 27, 2005 | NEPH | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Sept. 24, 2004 | NEPH | C | 203,102 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Sept. 24, 2004 | NEPH | C | 111,050 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Sept. 24, 2004 | NEPH | C | 92,500 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Sept. 24, 2004 | NEPH | C | 154,458 | — | — | 509,922 Direct | +43.45% | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Dec. 19, 2006 | SIGA | Stock Option (Right to buy) | Common Stock, par value $.0001 per share (10,000) | $2.72 | Dec. 19, 2016 | 10,000 | Acquired |
| Feb. 2, 2006 | NEPH | Non-qualified stock option (right to buy) | Common Stock $.001 par value (10,000) | $2.57 | Feb. 2, 2016 | 10,000 | Acquired |
| April 27, 2005 | NEPH | Non-qualified stock option (right to buy) | Common Stock $.001 par value (10,000) | $3.40 | April 27, 2015 | 10,000 | Acquired |
| Sept. 24, 2004 | NEPH | Series D Convertible Preferred Stock | Common stock (91,323) | — | — | 203,102 | Disposed |
| Sept. 24, 2004 | NEPH | Series C Convertible Preferred Stock | Common stock (36,856) | — | — | 111,050 | Disposed |
| Sept. 24, 2004 | NEPH | Series A Convertible Preferred Stock | Common stock (26,279) | — | — | 92,500 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).