Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 1 non-open-market transaction below 12 months to the week close of 2026-10-23

Price change vs the latest weekly close (updated to the current quote in your browser when available), 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
Jan. 22, 2024 JBIO A 66,586 · · 66,586 Direct · Acquired

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
Jan. 22, 2024 JBIO Stock Option (Right to Buy) Common Stock (66,586) $20.00 Jan. 21, 2034 66,586 Acquired

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

Initial ownership (Form 3) 4 holdings

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

DateTickerSecuritySharesOwnership
March 8, 2023 JBIO Common Stock 1,960 Direct
March 8, 2023 JBIO Stock Option (Right to Buy)→ Common Stock (77,000) 77,000 Direct
March 8, 2023 JBIO Stock Option (Right to Buy)→ Common Stock (30,000) 30,000 Direct
March 8, 2023 JBIO Stock Option (Right to Buy)→ Common Stock (74,000) 74,000 Direct

Holdings reported on Form 4 1 reported holding

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Positions listed on each Form 4 without a transaction in that filing (Table I and II holdings), newest filing first.

DateTickerSecuritySharesExercise priceExpirationOwnership
Jan. 24, 2024 JBIO Common Stock 1,291 · · Direct