Joseph Roberts — SEC Insider Profile, Roles & Companies

Insider at

04

05

0 buys (P) 0 sells (S) Net: $0 + 1 non-open-market transaction 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.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 17, 2025	ARCT	A	10,000	·	·	10,000 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.

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Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Dec. 17, 2025	ARCT	Employee Stock Option (right to buy)	Common Stock (10,000)	$6.52	Dec. 17, 2035	10,000	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
Dec. 19, 2025	ARCT	Common Stock	2,001	Direct
Dec. 19, 2025	ARCT	Common Stock	200	Indirect
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (5,000)	5,000	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (5,000)	5,000	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (2,808)	2,808	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (6,492)	6,492	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (7,000)	7,000	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (7,000)	7,000	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (7,500)	7,500	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (1,000)	1,000	Direct
Dec. 19, 2025	ARCT	Stock Option (Right to Buy)→ Common Stock (9,000)	9,000	Direct