Richard S Serbin
CIK 1296764 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 16, 2017 · Latest: Aug. 16, 2017
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 2 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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 23, 2025 | CODX | A | 57,499 | — | — | 271,666 Direct | +26.85% | Acquired | (price as of 2026-08-19) |
| Nov. 23, 2025 | CODX | M | 57,499 | — | — | 170,834 Direct | -25.18% | Disposed | (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 |
|---|---|---|---|---|---|---|---|
| Nov. 23, 2025 | CODX | Restricted Stock Unit | Common Stock (228,333) | $0.00 | — | 57,499 | 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 |
|---|---|---|---|---|
| Aug. 16, 2017 | CODX | Stock Options→ Common Stock (36,250) | 36,250 | Direct |