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Joan Lau

CIK 1881621 · last filed 2026-07-06

Joan Lau is a corporate insider who has filed 22 SEC Form 4 insider transactions across 4 companies since 2021. The most recent filing, for RMTI, was dated Jul 6, 2026. Current disclosed insider exposure totals $783.6K 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

$783.6K

Companies

4

Total Filings

22

Lifetime Open-Market Net

$0

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
RMTI Director 20,944 $6.99 $146.4K $0 5 2026-07-06
OLED Director 3,316 $82.29 $272.9K $0 10 2026-07-02
BDN Director 121,445 $3.00 $364.3K $0 4 2026-06-01
Renovacor, Inc. (RCOR.WS) Delisted Director — $0.07 — $0 2 2022-05-27

Recent Filings

22 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
2026-07-06 RMTI Grant (A) +9,633 $0 EDGAR
2026-07-02 OLED Grant (A) +455 $0 EDGAR
2026-06-01 BDN Grant (A) +37,582 $0 EDGAR
2026-04-02 OLED Grant (A) +456 $0 EDGAR
2026-01-05 OLED Grant (A) +341 $0 EDGAR
2025-10-02 OLED Grant (A) +341 $0 EDGAR
2025-07-02 OLED Grant (A) +342 $0 EDGAR
2025-05-23 BDN Grant (A) +27,644 $115.0K EDGAR
2025-05-21 RMTI Grant (A) +50,000 $0 EDGAR
2025-04-02 OLED Grant (A) +342 $0 EDGAR
Showing 1–10 of 22
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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.