Insider at

04

Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 11 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
Jan. 20, 2025 CHRS F 4,858 $1.39 $6,753 82,069 Direct -5.59% Disposed -23.0% (price as of 2026-10-06)
Jan. 4, 2025 CHRS F 2,277 $1.66 $3,780 86,927 Direct -2.55% Disposed -35.5% (price as of 2026-10-06)
Jan. 3, 2025 CHRS A 160,000 · · 160,000 Direct · Acquired (price as of 2026-10-06)
Dec. 13, 2024 CHRS F 2,073 $1.61 $3,338 89,204 Direct -2.27% Disposed -33.5% (price as of 2026-10-06)
July 22, 2024 CHRS A 40,000 · · 40,000 Direct · Acquired (price as of 2026-10-06)
Jan. 20, 2024 CHRS F 4,854 $2.44 $11,844 81,277 Direct -5.64% Disposed -56.1% (price as of 2026-10-06)
Jan. 4, 2024 CHRS F 2,275 $2.92 $6,643 86,131 Direct -2.57% Disposed -63.4% (price as of 2026-10-06)
Jan. 2, 2024 CHRS A 160,000 · · 160,000 Direct · Acquired (price as of 2026-10-06)
Dec. 13, 2023 CHRS F 2,049 $2.37 $4,856 88,406 Direct -2.27% Disposed -54.9% (price as of 2026-10-06)
June 13, 2023 CHRS A 70,000 · · 70,000 Direct · Acquired (price as of 2026-10-06)
April 1, 2023 CHRS F 2,451 $6.84 $16,765 87,053 Direct -2.74% Disposed -84.4% (price as of 2026-10-06)

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. 3, 2025 CHRS Stock Option (Right to Buy) Common Stock (160,000) $1.66 Jan. 3, 2035 160,000 Acquired
July 22, 2024 CHRS Stock Option (Right to Buy) Common Stock (40,000) $2.41 April 11, 2034 40,000 Acquired
Jan. 2, 2024 CHRS Stock Option (Right to Buy) Common Stock (160,000) $3.14 Jan. 2, 2034 160,000 Acquired
June 13, 2023 CHRS Stock Option (Right to Buy) Common Stock (70,000) $5.44 June 13, 2033 70,000 Acquired

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

Initial ownership (Form 3) 5 holdings

07

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

DateTickerSecuritySharesOwnership
March 28, 2023 CHRS Common Stock 89,504 Direct
March 28, 2023 CHRS Stock Option (Right to Buy)→ Common Stock (125,000) 125,000 Direct
March 28, 2023 CHRS Stock Option (Right to Buy)→ Common Stock (40,000) 40,000 Direct
March 28, 2023 CHRS Stock Option (Right to Buy)→ Common Stock (37,500) 37,500 Direct
March 28, 2023 CHRS Stock Option (Right to Buy)→ Common Stock (80,000) 80,000 Direct