Diem Nguyen

CIK 1814338 · View on SEC EDGAR ↗

Insider

First SEC filing: June 11, 2020 · Latest: June 9, 2026

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 31 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

31 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
July 29, 2021 CADL P 10,000 $8.00 $80,000 10,000 Direct — Acquired 58.9% (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
June 23, 2026 CADL Stock Option (Right to Buy) Common Stock (32,000) $9.08 June 23, 2036 32,000 Acquired
March 13, 2026 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (272,243) — — 272,243 Acquired
March 13, 2026 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (85,045) — — 85,045 Disposed
Jan. 27, 2026 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (55,902) — — 55,902 Disposed
June 17, 2025 CADL Stock Option (Right to Buy) Common Stock (14,240) $4.94 June 17, 2035 14,240 Acquired
June 5, 2025 VRCA Stock Option (right to buy) Common Stock (20,000) $0.58 June 4, 2035 20,000 Acquired
March 13, 2025 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (255,137) — — 255,137 Acquired
Jan. 27, 2025 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (55,902) — — 55,902 Disposed
Oct. 25, 2024 SIGA Performance Stock Units Common Stock, par value $.0001 per share (59,288) — — 59,288 Disposed
June 26, 2024 CADL Stock Option (Right to Buy) Common Stock (14,240) $5.71 June 26, 2034 14,240 Acquired
June 6, 2024 VRCA Stock Option (right to buy) Common Stock (20,000) $8.78 June 5, 2034 20,000 Acquired
Jan. 27, 2024 SIGA Performance Stock Units Common Stock, par value $.0001 per share (177,865) — — 177,865 Acquired
Jan. 27, 2024 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (167,707) — — 167,707 Acquired
Jan. 27, 2024 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (219,212) $5.06 Jan. 27, 2034 219,212 Acquired
Jan. 27, 2024 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (109,606) $5.06 Jan. 27, 2034 109,606 Acquired
June 28, 2023 CADL Stock Option (Right to Buy) Common Stock (14,240) $1.22 June 28, 2033 14,240 Acquired
June 8, 2023 VRCA Stock Option (right to buy) Common Stock (10,384) $5.70 June 7, 2033 10,384 Acquired
Oct. 13, 2022 CADL Stock Option (Right to Buy) Common Stock (14,240) $2.81 Oct. 13, 2032 14,240 Acquired
June 9, 2022 VRCA Stock Option (right to buy) Common Stock (10,384) $2.15 June 8, 2032 10,384 Acquired
June 10, 2021 VRCA Stock Option (right to buy) Common Stock $10.56 June 9, 2031 8,109 Acquired
June 10, 2021 VRCA Stock Option (right to buy) Common Stock (5,834) $10.56 June 9, 2031 5,834 Acquired
June 9, 2020 VRCA Stock Option (right to buy) Common Stock (17,502) $12.64 June 8, 2030 17,502 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
June 11, 2020 VRCA Common Stock 100 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

SIGA

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $927,000 $463,500 $1,853,992 — — — — $3,244,492
2024 $835,384 $900,000 $1,364,406 $1,350,000 — — — $4,449,790

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.