David Mcdonald
CIK 1455136 · View on SEC EDGAR ↗
Insider
First SEC filing: March 2, 2026 · Latest: March 2, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 6 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 |
|---|---|---|---|---|---|---|---|---|---|
| April 28, 2026 | NUWE | A | 6,744 | — | — | 6,744 Direct | — | Acquired | (price as of 2026-08-20) |
| March 10, 2011 | DCTH | A | 6,500 | — | — | 47,706 Direct | +15.77% | Acquired | (price as of 2026-08-20) |
| March 10, 2011 | DCTH | A | 30,000 | — | — | 30,000 Direct | — | Acquired | (price as of 2026-08-20) |
| March 12, 2010 | DCTH | F | 8,794 | $5.85 | $51,445 | 41,206 Direct | -17.59% | Disposed | -99.6% (price as of 2026-08-20) |
| Sept. 14, 2009 | DCTH | A | 50,000 | — | — | 50,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Sept. 14, 2009 | DCTH | A | 250,000 | — | — | 250,000 Direct | — | 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 |
|---|---|---|---|---|---|---|---|
| April 28, 2026 | NUWE | Nonstatutory Stock Option (right to buy) | Common Stock (6,744) | $1.16 | April 27, 2036 | 6,744 | Acquired |
| March 10, 2011 | DCTH | Stock Option (right to buy) | Common Stock (30,000) | $6.42 | March 10, 2021 | 30,000 | Acquired |
| Sept. 14, 2009 | DCTH | Stock Option (right to buy) | Common Stock (250,000) | $3.92 | Sept. 14, 2019 | 250,000 | 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.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 2, 2026 | NUWE | Nonstatutory Stock Option [F1]→ Common Stock (7) | 7 | Direct |
| March 2, 2026 | NUWE | Nonstatutory Stock Option→ Common Stock (416) | 416 | Direct |
| Sept. 15, 2009 | DCTH | No securities are benefically owned. | 0 | Direct |
| Feb. 4, 2009 | ANGO | Non-Qualified Stock Option (right to buy)→ Common Stock (40,800) | 40,800 | Direct |