Insider at

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Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 7 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

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Dec. 17, 2025 ARCT A 54,000 · · 54,000 Direct · Acquired (price as of 2026-10-05)
Dec. 16, 2024 ARCT A 60,000 · · 60,000 Direct · Acquired (price as of 2026-10-05)
Dec. 15, 2023 ARCT A 75,000 · · 75,000 Direct · Acquired (price as of 2026-10-05)
Dec. 9, 2022 ARCT A 125,000 · · 125,000 Direct · Acquired (price as of 2026-10-05)
June 21, 2022 ARCT A 50,000 · · 50,000 Direct · Acquired (price as of 2026-10-05)
Dec. 18, 2020 ARCT A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-05)
Aug. 10, 2020 ARCT A 90,000 · · 90,000 Direct · Acquired (price as of 2026-10-05)

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
Dec. 17, 2025 ARCT Employee Stock Option (right to buy) Common Stock (54,000) $6.52 Dec. 17, 2035 54,000 Acquired
Dec. 16, 2024 ARCT Employee Stock Option (right to buy) Common Stock (60,000) $16.24 Dec. 16, 2034 60,000 Acquired
Dec. 15, 2023 ARCT Employee Stock Option (right to buy) Common Stock (75,000) $28.88 Dec. 15, 2033 75,000 Acquired
Dec. 9, 2022 ARCT Employee Stock Option (right to buy) Common Stock (125,000) $16.92 Dec. 9, 2032 125,000 Acquired
June 21, 2022 ARCT Employee Stock Option (right to buy) Common Stock (50,000) $34.57 Dec. 10, 2031 50,000 Acquired
Dec. 18, 2020 ARCT Stock Option (right to buy) Common Stock (25,000) $99.29 Dec. 18, 2030 25,000 Acquired
Aug. 10, 2020 ARCT Stock Option (right to buy) Common Stock (90,000) $58.91 Aug. 9, 2030 90,000 Acquired

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

Compensation (DEF 14A)

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

Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2025 $540,000 · · $290,000 · · · $830,000
2024 $500,000 $180,000 · $807,000 · · · $1,487,000
2023 $500,000 $100,000 · $1,495,000 · · · $2,095,000

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