Nguyen Diem

Director · Officer · CADL, VRCA, SIGA

As of 2026-09-16, Nguyen Diem has 15 Form 4 transactions on record across 3 companies — 9 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $1.3MIndirect: $0$1.3Mas of 2026-09-16
  • Direct $1.3M
  • Indirect $0
SIGAdirect272,243 sh$844K
CADLdirect32,000 sh$353K
VRCAdirect16,000 sh$72K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

SIGA · 11 trades
2026-03-13: Withheld for tax, 47,029 sh ($247K)2026-03-13: Option exercise, 85,045 sh ($0)2026-03-13: Award / grant, 272,243 sh ($0)2026-03-13: Option exercise, 85,045 sh ($0)2026-01-27: Withheld for tax, 22,804 sh ($156K)2026-01-27: Option exercise, 55,902 sh ($0)2026-01-27: Option exercise, 55,902 sh ($0)2025-03-13: Award / grant, 255,137 sh ($0)2025-01-27: Withheld for tax, 23,644 sh ($150K)2025-01-27: Option exercise, 55,902 sh ($0)2025-01-27: Option exercise, 55,902 sh ($0)
CADL · 2 trades
2026-06-23: Award / grant, 32,000 sh ($0)2025-06-17: Award / grant, 14,240 sh ($0)
VRCA · 2 trades
2026-06-05: Award / grant, 16,000 sh ($0)2025-06-05: Award / grant, 20,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
15 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-23CADLAward / grant32,00032,000Form 4
2026-06-05VRCAAward / grant16,00016,000Form 4
2026-03-13SIGAWithheld for tax47,029138,767Form 4
2026-03-13SIGAOption exercise85,045185,796Form 4
2026-03-13SIGAAward / grant272,243272,243Form 4
2026-03-13SIGAOption exercise85,045170,092Form 4
2026-01-27SIGAWithheld for tax22,804100,751Form 4
2026-01-27SIGAOption exercise55,902123,555Form 4
2026-01-27SIGAOption exercise55,90255,903Form 4
2025-06-17CADLAward / grant14,24014,240Form 4
2025-06-05VRCAAward / grant20,00020,000Form 4
2025-03-13SIGAAward / grant255,137255,137Form 4
2025-01-27SIGAWithheld for tax23,64467,653Form 4
2025-01-27SIGAOption exercise55,90291,297Form 4
2025-01-27SIGAOption exercise55,902111,805Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.