Insider at

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Insider transactions

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4 buys (P) 0 sells (S) Net: $61,865 + 28 non-open-market transactions below Avg return of open purchases vs now: -45.5% 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

28 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Dec. 16, 2025 AKTX P 123,731 · · 123,731 Direct · Acquired (price as of 2026-10-02)
Dec. 16, 2025 AKTX P 123,731 $0.40 $49,492 123,731 Direct · Acquired -45.5% (price as of 2026-10-02)
Dec. 16, 2025 AKTX P 30,932 · · 30,932 Direct · Acquired (price as of 2026-10-02)
Dec. 16, 2025 AKTX P 30,932 $0.40 $12,373 30,932 Direct · Acquired -45.5% (price as of 2026-10-02)
March 30, 2021 NUVB P 5,000 $9.98 $49,900 5,000 Direct · Acquired -48.5% (price as of 2026-10-02)

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.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 16, 2026 ARDX Stock Option (Right to Buy) Common Stock (39,715) $5.67 June 16, 2036 39,715 Acquired
May 21, 2026 NUVB Stock Option (Right to Buy) Class A Common Stock (123,397) $4.79 May 20, 2036 123,397 Acquired
Dec. 16, 2025 AKTX Warrants to purchase American Depositary Shares ("ADRs") [F1,F2] American Depositary Shares representing Ordinary Shares (123,731) $0.39 · 123,731 Acquired
Dec. 16, 2025 AKTX Pre-Funded Warrants to purchase ADRs [F1,F2] American Depositary Shares representing Ordinary Shares (123,731) · · 123,731 Acquired
Dec. 16, 2025 AKTX Warrants to purchase ADRs [F1,F5] American Depositary Shares representing Ordinary Shares (30,932) $0.39 · 30,932 Acquired
Dec. 16, 2025 AKTX Pre-Funded Warrants to purchase ADRs [F1,F5] American Depositary Shares representing Ordinary Shares (30,932) · · 30,932 Acquired
June 18, 2025 ARDX Stock Option (Right to Buy) Common Stock (54,059) $3.61 June 18, 2035 54,059 Acquired
May 21, 2025 NUVB Stock Option (Right to Buy) Class A Common Stock (292,983) $2.03 May 20, 2035 292,983 Acquired
March 20, 2025 AKTX Stock Option (Right to Buy) American Depositary Shares representing Ordinary Shares [F1] (175,000) $1.50 March 20, 2035 175,000 Acquired
March 20, 2025 AKTX Stock Option (Right to Buy) American Depositary Shares representing Ordinary Shares [F1] (225,000) $1.50 March 20, 2035 225,000 Acquired
March 6, 2025 AKTX Series B Warrants (Right to Buy) American Depositary Shares representing Ordinary Shares [F1] (44,642) $0.87 March 6, 2030 44,642 Acquired
March 6, 2025 AKTX Series A Warrants (Right to Buy) American Depositary Shares representing Ordinary Shares [F1] (44,642) $0.87 March 6, 2026 44,642 Acquired
Sept. 17, 2024 AKTX Stock Option (Right to Buy) Ordinary Shares, par value $0.0001 per share [F3] (5,000,000) · Sept. 17, 2034 5,000,000 Acquired
Sept. 3, 2024 NUVB Stock Option (Right to Buy) Class A Common Stock (200,801) $2.98 Sept. 2, 2034 200,801 Acquired
June 14, 2024 ARDX Stock Option (Right to Buy) Common Stock (40,243) $6.35 June 14, 2034 40,243 Acquired
June 15, 2023 ARDX Stock Option (Right to Buy) Common Stock (49,237) $3.92 June 15, 2033 49,237 Acquired
May 15, 2023 NUVB Stock Option (Right to Buy) Class A Common Stock (366,744) $1.64 May 14, 2033 366,744 Acquired
June 15, 2022 ARDX Stock Option (Right to Buy) Common Stock (100,000) $0.55 June 15, 2032 100,000 Acquired
May 16, 2022 NUVB Stock Option (Right to Buy) Class A Common Stock (140,713) $4.05 May 15, 2032 140,713 Acquired
May 16, 2022 NUVB Stock Option (Right to Buy) Class A Common Stock (118,784) $4.05 May 15, 2032 118,784 Acquired
Oct. 29, 2021 NUVB Stock Option (Right to Buy) Class A Common Stock (45,229) $9.17 Oct. 28, 2031 45,229 Acquired
June 16, 2021 ARDX Stock Option (Right to Buy) Common Stock (32,765) $7.31 June 16, 2031 32,765 Acquired
Feb. 10, 2021 NUVB Stock Option (Right to Buy) Class A Common Stock (187,658) $1.74 July 21, 2030 187,658 Acquired
Feb. 10, 2021 NUVB Stock Option (Right to Buy) Class A Common Stock (51,703) $4.60 Oct. 4, 2030 51,703 Acquired
June 9, 2020 ARDX Stock Option (Right to Buy) Common Stock (23,500) $7.31 June 9, 2030 23,500 Acquired
June 13, 2019 ARDX Stock Option (Right to Buy) Common Stock (50,000) $2.74 June 13, 2029 50,000 Acquired
June 13, 2018 ARDX Stock Option (Right to Buy) Common Stock (15,000) $4.03 June 13, 2028 15,000 Acquired
June 7, 2017 ARDX Stock Option (Right to Buy) Common Stock (15,000) $4.30 June 7, 2027 15,000 Acquired
June 2, 2016 ARDX Stock Option (Right to Buy) Common Stock (25,000) $9.27 June 2, 2026 25,000 Acquired

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

Initial ownership (Form 3) 1 holding

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

DateTickerSecuritySharesOwnership
Feb. 12, 2021 NUVB No securities owned. 0 Direct