Donald A. Kalkofen
CIK 1771066 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 17, 2022 · Latest: Feb. 17, 2022
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
6 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 3, 2019 | PTGX | P | 562 | $5.09 | $2,861 | 1,175 Direct | +91.68% | Acquired | 2883.3% (price as of 2026-08-21) |
| Dec. 3, 2019 | PTGX | P | 613 | $5.10 | $3,126 | 613 Direct | — | Acquired | 2877.5% (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 15, 2022 | PTGX | Stock Option (right to buy) | Common Stock (45,000) | $28.73 | Feb. 14, 2032 | 45,000 | Acquired |
| Feb. 26, 2021 | PTGX | Stock Option (right to buy) | Common Stock (55,000) | $23.57 | Feb. 25, 2031 | 55,000 | Acquired |
| Feb. 28, 2020 | PTGX | Stock Option (right to buy) | Common Stock (55,000) | $7.80 | Feb. 27, 2030 | 55,000 | Acquired |
| May 31, 2019 | PTGX | Stock Option (right to buy) | Common Stock (100,000) | $10.06 | May 30, 2029 | 100,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).