Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 29 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
May 29, 2026 CHRS A 30,000 · · 30,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS A 15,000 · · 15,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS A 100,000 · · 100,000 Direct · Acquired (price as of 2026-10-02)
May 29, 2026 CHRS D 30,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 29, 2026 CHRS D 25,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 29, 2026 CHRS D 25,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 29, 2026 CHRS D 15,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 29, 2026 CHRS D 25,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 29, 2026 CHRS D 100,000 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Jan. 22, 2026 CHRS A 112,500 · · 133,736 Direct +529.76% Acquired (price as of 2026-10-02)
Jan. 22, 2026 CHRS A 225,000 · · 225,000 Direct · Acquired (price as of 2026-10-02)
Jan. 20, 2026 CHRS F 1,715 $1.55 $2,658 21,236 Direct -7.47% Disposed -25.2% (price as of 2026-10-02)
May 7, 2025 CHRS A 200,000 · · 200,000 Direct · Acquired (price as of 2026-10-02)
Jan. 20, 2025 CHRS F 1,711 $1.39 $2,378 22,951 Direct -6.94% Disposed -16.5% (price as of 2026-10-02)
Jan. 7, 2025 CHRS F 1,711 $1.57 $2,686 24,662 Direct -6.49% Disposed -26.1% (price as of 2026-10-02)
Jan. 3, 2025 CHRS A 160,000 · · 160,000 Direct · Acquired (price as of 2026-10-02)
Aug. 7, 2024 CHRS A 75,000 · · 75,000 Direct · Acquired (price as of 2026-10-02)
Jan. 20, 2024 CHRS F 1,707 $2.44 $4,165 22,972 Direct -6.92% Disposed -52.5% (price as of 2026-10-02)
Jan. 7, 2024 CHRS F 1,707 $2.87 $4,899 24,679 Direct -6.47% Disposed -59.6% (price as of 2026-10-02)
Jan. 2, 2024 CHRS A 125,000 · · 125,000 Direct · Acquired (price as of 2026-10-02)
June 13, 2023 CHRS A 30,000 · · 30,000 Direct · Acquired (price as of 2026-10-02)
March 27, 2023 CHRS A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-02)
Jan. 20, 2023 CHRS A 12,500 · · 26,386 Direct +90.02% Acquired (price as of 2026-10-02)
Jan. 7, 2023 CHRS F 1,699 $9.58 $16,276 13,886 Direct -10.90% Disposed -87.9% (price as of 2026-10-02)
Jan. 4, 2023 CHRS A 25,000 · · 25,000 Direct · Acquired (price as of 2026-10-02)
Sept. 7, 2022 CHRS A 15,000 · · 15,000 Direct · Acquired (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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (30,000) · May 29, 2036 30,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) · May 29, 2036 25,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) · May 29, 2036 25,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (15,000) · May 29, 2036 15,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) · May 29, 2036 25,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (100,000) · May 29, 2036 100,000 Acquired
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (30,000) $5.44 June 13, 2033 30,000 Disposed
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) $6.00 March 27, 2033 25,000 Disposed
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) $9.87 Jan. 4, 2033 25,000 Disposed
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (15,000) $10.78 Sept. 7, 2032 15,000 Disposed
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (25,000) $14.67 Jan. 7, 2032 25,000 Disposed
May 29, 2026 CHRS Stock Option (Right to Buy) Common Stock (100,000) $14.76 April 28, 2031 100,000 Disposed
Jan. 22, 2026 CHRS Stock Option (Right to Buy) Common Stock (225,000) $1.59 Jan. 22, 2036 225,000 Acquired
May 7, 2025 CHRS Stock Option (Right to Buy) Common Stock (200,000) $0.95 May 7, 2035 200,000 Acquired
Jan. 3, 2025 CHRS Stock Option (Right to Buy) Common Stock (160,000) $1.66 Jan. 3, 2035 160,000 Acquired
Aug. 7, 2024 CHRS Stock Option (Right to Buy) Common Stock (75,000) $1.24 Aug. 7, 2034 75,000 Acquired
Jan. 2, 2024 CHRS Stock Option (Right to Buy) Common Stock (125,000) $3.14 Jan. 2, 2034 125,000 Acquired
June 13, 2023 CHRS Stock Option (Right to Buy) Common Stock (30,000) $5.44 June 13, 2033 30,000 Acquired
March 27, 2023 CHRS Stock Option (Right to Buy) Common Stock (25,000) $6.00 March 27, 2033 25,000 Acquired
Jan. 4, 2023 CHRS Stock Option (Right to Buy) Common Stock (25,000) $9.87 Jan. 4, 2033 25,000 Acquired
Sept. 7, 2022 CHRS Stock Option (Right to Buy) Common Stock (15,000) $10.78 Sept. 7, 2032 15,000 Acquired

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

Initial ownership (Form 3) 3 holdings

07

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

DateTickerSecuritySharesOwnership
Sept. 9, 2022 CHRS Common Stock · Direct
Sept. 9, 2022 CHRS Stock Option (Right to Buy)→ Common Stock (100,000) 100,000 Direct
Sept. 9, 2022 CHRS Stock Option (Right to Buy)→ Common Stock (25,000) 25,000 Direct