John W Cummings
CIK 1952404 · View on SEC EDGAR ↗
Insider
First SEC filing: Oct. 27, 2022 · Latest: Oct. 27, 2022
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 21 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
21 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 11, 2023 | TCBIO | P | 1,110 | $44.57 | $49,473 | 2,323 Direct | +91.51% | Acquired | -54.0% (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 |
|---|---|---|---|---|---|---|---|
| Feb. 14, 2025 | TCBIO | 2024 Restricted Stock Units | Common Stock | $0.00 | — | 1,469 | Disposed |
| Feb. 7, 2025 | TCBIO | Restricted Stock Units | Common Stock (1,306) | $0.00 | — | 1,306 | Disposed |
| Feb. 3, 2025 | TCBIO | Restricted Stock Units | Common Stock (1,725) | $0.00 | — | 1,725 | Disposed |
| Jan. 28, 2025 | TCBIO | 2025 Restricted Stock Units | Common Stock (4,497) | $0.00 | — | 4,497 | Acquired |
| July 29, 2024 | TCBIO | 2024 Restricted Stock Units | Common Stock (5,320) | $0.00 | — | 5,320 | Acquired |
| Feb. 16, 2024 | TCBIO | 2024 Restricted Stock Units | Common Stock | $0.00 | — | 4,409 | Acquired |
| Feb. 16, 2024 | TCBIO | 2024 Restricted Stock Units | Common Stock (8,817) | $0.00 | — | 8,817 | Acquired |
| Feb. 9, 2024 | TCBIO | Restricted Stock Units | Common Stock (1,306) | $0.00 | — | 1,306 | Disposed |
| Feb. 1, 2024 | TCBIO | Restricted Stock Units | Common Stock (1,725) | $0.00 | — | 1,725 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 27, 2022 | TCBIO | Common Stock | 5,175 | Direct |