William M. Gust
CIK 1589722 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 9, 2014 · Latest: Jan. 9, 2014
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 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 |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 15, 2014 | CBIO | C | 1,121,646 | — | — | 0 Indirect | -100.00% | Disposed | (price as of 2026-08-19) |
| Jan. 15, 2014 | CBIO | C | 339,686 | — | — | 409,947 Indirect | +483.46% | Acquired | (price as of 2026-08-19) |
| Jan. 9, 2014 | CBIO | A | 15,401 | — | — | 15,401 Direct | — | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Jan. 15, 2014 | CBIO | Series A-1 Preferred Stock | Common Stock (339,686) | — | — | 1,121,646 | Disposed |
| Jan. 9, 2014 | CBIO | Stock Option (right to buy) | Common Stock (15,401) | $8.00 | Jan. 9, 2024 | 15,401 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 9, 2014 | CBIO | Common Stock | 70,261 | Indirect |
| Jan. 9, 2014 | CBIO | Stock Option (right to buy)→ Common Stock | — | Direct |
| Jan. 9, 2014 | CBIO | Warrant to Purchase Common Stock (right to buy)→ Common Stock | — | Indirect |
| Jan. 9, 2014 | CBIO | Warrant to Purchase Common Stock (right to buy)→ Common Stock | — | Indirect |
| Jan. 9, 2014 | CBIO | Series A-1 Preferred Stock→ Common Stock (339,686) | 339,686 | Indirect |