Gary J. Nabel

CIK 1867450 · View on SEC EDGAR ↗

Insider

First SEC filing: May 11, 2022 · Latest: June 10, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 34 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

34 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Jan. 8, 2024 OPK P 106,989 $0.93 $99,500 107,489 Indirect +21397.80% Acquired 57.0% (price as of 2026-08-20)
Jan. 8, 2024 OPK P 500 $0.92 $460 500 Indirect — Acquired 58.7% (price as of 2026-08-20)
Jan. 8, 2024 OPK P 108,695 $0.92 $99,999 351,442 Indirect +44.78% Acquired 58.7% (price as of 2026-08-20)
May 5, 2023 OPK P 54,054 $1.85 $100,000 242,747 Indirect +28.65% Acquired -21.1% (price as of 2026-08-20)
May 5, 2023 OPK P 20,009 $1.85 $37,017 188,693 Indirect +11.86% Acquired -21.1% (price as of 2026-08-20)
May 5, 2023 OPK P 54,346 $1.84 $99,997 168,684 Indirect +47.53% Acquired -20.7% (price as of 2026-08-20)
May 5, 2023 OPK P 34,338 $1.84 $63,182 114,338 Indirect +42.92% Acquired -20.7% (price as of 2026-08-20)
May 5, 2023 OPK P 54,945 $1.82 $100,000 19,912,459 Indirect +0.28% Acquired -19.8% (price as of 2026-08-20)
May 5, 2023 OPK P 26,407 $1.85 $48,853 19,912,459 Indirect +0.13% Acquired -21.1% (price as of 2026-08-20)
May 5, 2023 OPK P 28,538 $1.82 $51,939 19,886,052 Indirect +0.14% Acquired -19.8% (price as of 2026-08-20)
May 5, 2023 OPK P 10,928 $1.83 $19,998 263,079 Direct +4.33% Acquired -20.2% (price as of 2026-08-20)
May 5, 2023 OPK P 19,475 $1.83 $35,639 252,151 Direct +8.37% Acquired -20.2% (price as of 2026-08-20)
May 5, 2023 OPK P 79,334 $1.82 $144,388 232,676 Direct +51.74% Acquired -19.8% (price as of 2026-08-20)
May 5, 2023 OPK P 27,624 $1.81 $49,999 153,342 Direct +21.97% Acquired -19.3% (price as of 2026-08-20)
May 5, 2023 OPK P 27,777 $1.80 $49,999 125,718 Direct +28.36% Acquired -18.9% (price as of 2026-08-20)
May 5, 2023 OPK P 3,185 $1.79 $5,701 97,941 Direct +3.36% Acquired -18.4% (price as of 2026-08-20)
May 5, 2023 OPK P 19,285 $1.78 $34,327 94,756 Direct +25.55% Acquired -18.0% (price as of 2026-08-20)
June 22, 2022 OPK P 80,000 $2.47 $197,600 80,000 Indirect — Acquired -40.9% (price as of 2026-08-20)
June 22, 2022 OPK P 33,777 $2.50 $84,442 19,857,514 Indirect +0.17% Acquired -41.6% (price as of 2026-08-20)
June 22, 2022 OPK P 15,200 $2.50 $38,000 19,823,737 Indirect +0.08% Acquired -41.6% (price as of 2026-08-20)
June 22, 2022 OPK P 31,023 $2.50 $77,558 19,808,537 Indirect +0.16% Acquired -41.6% (price as of 2026-08-20)
June 22, 2022 OPK P 13,229 $2.50 $33,072 19,857,514 Indirect +0.07% Acquired -41.6% (price as of 2026-08-20)
June 22, 2022 OPK P 65,280 $2.50 $163,200 19,844,285 Indirect +0.33% Acquired -41.6% (price as of 2026-08-20)
June 22, 2022 OPK P 1,491 $2.50 $3,728 19,779,005 Indirect +0.01% Acquired -41.6% (price as of 2026-08-20)
May 18, 2022 OPK P 68,492 $2.90 $198,627 75,471 Direct +981.40% Acquired -49.7% (price as of 2026-08-20)
May 12, 2022 OPK P 6,979 $2.65 $18,494 6,979 Direct — Acquired -44.9% (price as of 2026-08-20)

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
June 9, 2026 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (34,169) — — 34,169 Acquired
June 9, 2026 SIGA Restricted Stock Unites Common Stock, par value $.0001 per share (24,116) — — 24,116 Disposed
June 17, 2025 CADL Stock Option (Right to Buy) Common Stock (14,240) $4.94 June 17, 2035 14,240 Acquired
June 10, 2025 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (24,116) — — 24,116 Acquired
June 10, 2025 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (19,084) — — 19,084 Disposed
May 27, 2025 OPK Stock Option (Right to Buy) Common Stock (437,500) $1.31 May 26, 2035 437,500 Acquired
June 26, 2024 CADL Stock Option (Right to Buy) Common Stock (14,240) $5.71 June 26, 2034 14,240 Acquired
June 11, 2024 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (19,084) — — 19,084 Acquired
June 11, 2024 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (24,712) — — 24,712 Disposed
June 28, 2023 CADL Stock Option (Right to Buy) Common Stock (14,240) $1.22 June 28, 2033 14,240 Acquired
June 13, 2023 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (24,712) — — 24,712 Acquired
June 13, 2023 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (14,620) — — 14,620 Disposed
May 18, 2023 OPK Stock Option (Right to Buy) Common Stock (700,000) $1.58 May 17, 2033 700,000 Acquired
Aug. 8, 2022 CADL Stock Option (Right to Buy) Common Stock (28,480) $3.38 Aug. 8, 2032 28,480 Acquired
June 14, 2022 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (14,620) — — 14,620 Acquired
June 14, 2022 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (22,831) — — 22,831 Disposed
May 9, 2022 OPK Stock Option (Right to Buy) Common Stock (34,923) $3.20 May 8, 2032 34,923 Acquired
June 15, 2021 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (25,000) $6.57 June 15, 2031 25,000 Acquired
June 15, 2021 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (22,831) — — 22,831 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
May 11, 2022 OPK Common Stock 0 Direct