Charles S. Fuchs
CIK 1719576 · View on SEC EDGAR ↗
Insider
First SEC filing: June 15, 2018 · Latest: June 15, 2018
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 10, 2026 | ERAS | A | 1,300,000 | — | — | 1,300,000 Direct | — | Acquired | (price as of 2026-08-21) |
| July 24, 2026 | CTMX | A | 118,000 | — | — | 118,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 13, 2018 | CTMX | A | 14,000 | — | — | 14,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 23, 2017 | CTMX | A | 28,000 | — | — | 28,000 Direct | — | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Aug. 10, 2026 | ERAS | Stock option (right to buy) | Common Stock (1,300,000) | $18.12 | Aug. 9, 2036 | 1,300,000 | Acquired |
| July 24, 2026 | CTMX | Stock Option (Right to Buy) | Common Stock (118,000) | $3.24 | July 23, 2036 | 118,000 | Acquired |
| June 13, 2018 | CTMX | Stock Option (Right to Buy) | Common Stock (14,000) | $25.25 | June 12, 2028 | 14,000 | Acquired |
| Oct. 23, 2017 | CTMX | Stock Option (right to buy) | Common Stock (28,000) | $20.04 | Oct. 22, 2027 | 28,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).