Stephen S Tang PHD
CIK 1240718 · View on SEC EDGAR ↗
First SEC filing: May 15, 2018 · Latest: May 15, 2018
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Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 15, 2018 | OSUR | S | 23,333 | $17.97 | $419,294 | 36,416 Direct | -39.05% | Disposed | -79.1% (price as of 2026-08-21) |
| March 21, 2017 | OSUR | S 10b5-1 | 220 | $12.00 | $2,640 | 31,748 Direct | -0.69% | Disposed | -68.7% (price as of 2026-08-21) |
| March 2, 2017 | OSUR | S 10b5-1 | 6,100 | $12.02 | $73,322 | 31,968 Direct | -16.02% | Disposed | -68.8% (price as of 2026-08-21) |
| Feb. 15, 2017 | OSUR | S | 40,000 | $11.04 | $441,600 | 38,068 Direct | -51.24% | Disposed | -66.0% (price as of 2026-08-21) |
| Feb. 9, 2017 | OSUR | S 10b5-1 | 12,641 | $10.23 | $129,317 | 38,068 Direct | -24.93% | Disposed | -63.3% (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, 2018 | OSUR | Nonqualified stock options | Common stock (23,333) | $8.32 | Nov. 14, 2026 | 23,333 | Disposed |
| Feb. 15, 2017 | OSUR | Nonqualified stock option | Common stock (40,000) | $8.20 | April 6, 2021 | 40,000 | Disposed |
| Nov. 14, 2016 | OSUR | Non-qualified stock options | Common stock (40,000) | $8.32 | Nov. 14, 2026 | 40,000 | Acquired |
| April 6, 2011 | OSUR | Non-Qualified Stock Options | Common Stock (40,000) | $8.20 | April 6, 2021 | 40,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2020 | $624,225 | — | $1,218,000 | — | $1,239,196 | — | $4,000 | $3,085,421 |
| 2019 | $609,000 | — | $1,242,996 | — | $258,825 | — | $4,000 | $2,114,821 |
| 2018 | — | — | $623,363 | — | $818,346 | — | $15,000 | $2,099,594 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.