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Diem Nguyen

CIK 1814338 · Chief Executive Officer · last filed 2026-06-24

Diem Nguyen is a Chief Executive Officer who has filed 20 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for CADL, was dated Jun 24, 2026. Across all open-market trades the lifetime net is +$80.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $511.6K 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

$511.6K

Companies

3

Total Filings

20

Lifetime Open-Market Net

$80.0K

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
CADL Director 10,000 $10.50 $105.0K $80.0K 6 2026-06-24
VRCA Director — $5.12 — $0 8 2026-06-09
SIGA Chief Executive Officer 138,767 $2.93 $406.6K $0 6 2026-03-17

Recent Filings

20 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
2026-06-24 CADL Grant (A) — $0 EDGAR
2026-06-09 VRCA Grant (A) — $0 EDGAR
2026-03-17 SIGA Mixed +38,016 -$247.4K EDGAR
2026-01-28 SIGA Mixed +33,098 -$155.5K EDGAR
2025-06-18 CADL Grant (A) — $0 EDGAR
2025-06-09 VRCA Grant (A) — $0 EDGAR
2025-03-14 SIGA Grant (A) — $0 EDGAR
2025-01-29 SIGA Mixed +32,258 -$149.9K EDGAR
2024-10-29 SIGA Mixed +35,395 -$161.8K EDGAR
2024-06-27 CADL Grant (A) — $0 EDGAR
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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.