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STEPHEN S PHD TANG

CIK 1240718 · President and CEO · last filed 2022-02-03

STEPHEN S PHD TANG is a President and CEO who has filed 21 SEC Form 4 insider transactions across 1 company since 2011. The most recent filing, for OSUR, was dated Feb 3, 2022. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.5M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$1.49M

Companies

1

Total Filings

21

Lifetime Open-Market Net

-$1.24M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
OSUR President and CEO 349,793 $4.25 $1.49M -$1.24M 21 2022-02-03

Recent Filings

21 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2022-02-03 OSUR Mixed +89,592 $793.8K EDGAR
2021-02-02 OSUR Mixed +60,438 $940.1K EDGAR
2020-02-04 OSUR Mixed +79,803 $571.8K EDGAR
2019-05-14 OSUR Buy (P) +1,000 $8.6K EDGAR
2019-04-03 OSUR Mixed — -$46.3K EDGAR
2019-02-05 OSUR Grant (A) +47,872 $0 EDGAR
2018-05-15 OSUR Tax (F) −2,444 -$39.0K EDGAR
2018-04-03 OSUR Grant (A) +37,116 $0 EDGAR
2018-02-20 OSUR Mixed — -$225.0K EDGAR
2017-05-17 OSUR Mixed +4,668 -$49.7K EDGAR
Showing 1–10 of 21
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.