Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 53 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

53 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 26, 2018 CTMX S 10b5-1 5,000 $31.93 $159,650 271,643 Indirect -1.81% Disposed -92.0% (price as of 2026-10-02)
March 2, 2018 CTMX S 10b5-1 16,181 $30.00 $485,430 276,643 Indirect -5.53% Disposed -91.5% (price as of 2026-10-02)
Feb. 28, 2018 CTMX S 10b5-1 3,819 $30.00 $114,570 292,824 Indirect -1.29% Disposed -91.5% (price as of 2026-10-02)
Jan. 5, 2018 CTMX S 10b5-1 10,000 $25.01 $250,100 296,643 Indirect -3.26% Disposed -89.8% (price as of 2026-10-02)
Dec. 26, 2017 CTMX S 10b5-1 5,000 $22.29 $111,450 306,643 Indirect -1.60% Disposed -88.5% (price as of 2026-10-02)
Oct. 4, 2017 CTMX S 10b5-1 10,000 $24.27 $242,700 311,643 Indirect -3.11% Disposed -89.5% (price as of 2026-10-02)
Sept. 26, 2017 CTMX S 10b5-1 5,000 $17.30 $86,500 321,643 Indirect -1.53% Disposed -85.2% (price as of 2026-10-02)
June 26, 2017 CTMX S 10b5-1 5,000 $14.61 $73,050 326,643 Indirect -1.51% Disposed -82.5% (price as of 2026-10-02)
Oct. 14, 2015 CTMX P 5,000 $12.00 $60,000 5,000 Indirect · Acquired -78.7% (price as of 2026-10-02)
Oct. 14, 2015 CTMX P 10,000 $12.00 $120,000 147,791 Direct +7.26% Acquired -78.7% (price as of 2026-10-02)
Sept. 8, 2010 AMGN S 800 $52.36 $41,888 15,748 Direct -4.83% Disposed 669.7% (price as of 2026-10-02)
Aug. 26, 2010 AMGN S 800 $51.76 $41,408 16,548 Direct -4.61% Disposed 678.7% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 100 $53.37 $5,337 13,655 Direct -0.73% Disposed 655.2% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 300 $53.36 $16,008 13,755 Direct -2.13% Disposed 655.3% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 2,700 $53.35 $144,045 14,055 Direct -16.11% Disposed 655.5% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 1,996 $53.33 $106,447 16,755 Direct -10.64% Disposed 655.7% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 2,462 $53.30 $131,225 18,751 Direct -11.61% Disposed 656.2% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 338 $53.27 $18,005 21,213 Direct -1.57% Disposed 656.6% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 100 $53.26 $5,326 21,551 Direct -0.46% Disposed 656.7% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 400 $53.26 $21,304 21,651 Direct -1.81% Disposed 656.7% (price as of 2026-10-02)
Jan. 27, 2009 AMGN S 7,604 $53.25 $404,913 22,051 Direct -25.64% Disposed 656.9% (price as of 2026-10-02)
Feb. 17, 2006 AMGN P 4,705 $74.48 $350,428 8,349 Direct +129.12% Acquired 441.1% (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
June 15, 2022 CTMX Stock Option (Right to Buy) Common Stock (25,000) $1.72 June 14, 2032 25,000 Acquired
June 16, 2021 CTMX Stock Option (Right to Buy) Common Stock (20,000) $7.13 June 15, 2031 20,000 Acquired
June 17, 2020 CTMX Stock Option (Right to Buy) Common Stock (20,000) $8.35 June 16, 2030 20,000 Acquired
June 19, 2019 CTMX Stock Option (Right to Buy) Common Stock (14,000) $11.31 June 18, 2029 14,000 Acquired
June 13, 2018 CTMX Stock Option (Right to Buy) Common Stock (14,000) $25.25 June 12, 2028 14,000 Acquired
June 20, 2017 CTMX Stock Option (right to buy) Common Stock (14,000) $13.78 June 19, 2027 14,000 Acquired
Aug. 9, 2016 CTMX Stock Option (right to buy) Common Stock (17,139) $1.57 Feb. 8, 2025 17,139 Disposed
Aug. 9, 2016 CTMX Stock Option (right to buy) Common Stock (27,606) $1.45 May 23, 2024 27,606 Disposed
Aug. 9, 2016 CTMX Stock Option (right to buy) Common Stock (16,612) $0.94 Feb. 25, 2023 16,612 Disposed
Aug. 9, 2016 CTMX Stock Option (right to buy) Common Stock (31,767) $1.13 March 23, 2021 31,767 Disposed
June 10, 2016 CTMX Stock Option (right to buy) Common Stock (14,000) $10.17 June 9, 2026 14,000 Acquired
April 25, 2011 AMGN Nqso (Right to Buy) Common Stock (5,000) $54.69 April 25, 2021 5,000 Acquired
April 26, 2010 AMGN Nqso (Right to Buy) Common Stock (5,000) $58.43 April 26, 2020 5,000 Acquired
April 28, 2009 AMGN Nqso (Right to Buy) Common Stock (5,000) $50.44 April 28, 2016 5,000 Acquired
Jan. 27, 2009 AMGN Nqso (Right to Buy) Common Stock (16,000) $28.97 Jan. 27, 2009 16,000 Disposed
April 29, 2008 AMGN NQSO (Right to Buy) Common Stock (5,000) $42.13 April 29, 2015 5,000 Acquired
April 26, 2007 AMGN NQSO (Right to Buy) Common Stock (5,000) $62.55 April 26, 2014 5,000 Acquired
Nov. 17, 2006 HCA Non-Qualified Stock Option (right-to-buy) Common Stock (5,715) $54.68 June 9, 2015 5,715 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (3,833) $43.49 May 25, 2016 3,833 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (6,229) $40.14 June 10, 2014 6,229 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (6,179) $32.30 July 24, 2013 6,179 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (6,950) $39.20 May 24, 2011 6,950 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (15,000) $22.25 Sept. 24, 2009 15,000 Disposed
Nov. 17, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (14,733) $32.27 May 15, 2008 14,733 Disposed
May 25, 2006 HCA Non-Qualified Stock Option (right to buy) Common Stock (3,833) $43.49 May 25, 2016 3,833 Acquired
March 15, 2006 AMGN NQSO (Right to Buy) Common Stock (5,000) $74.89 March 15, 2013 5,000 Acquired
June 9, 2005 HCA Non-Qualified Stock Option (right-to-buy) Common Stock (5,715) $54.68 June 9, 2015 5,715 Acquired
March 15, 2005 AMGN NQSO (Right to Buy) Common Stock (5,000) $58.61 March 15, 2015 5,000 Acquired
June 10, 2004 HCA Non-Qualified Stock Option (right to buy) Common Stock (6,229) $40.14 June 10, 2014 6,229 Acquired
March 15, 2004 AMGN NQSO (Right to Buy) Common Stock (5,000) $59.48 March 15, 2011 5,000 Acquired

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

Initial ownership (Form 3) 6 holdings

07

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

DateTickerSecuritySharesOwnership
Oct. 7, 2015 CTMX Common Stock 137,791 Direct
Oct. 7, 2015 CTMX Common Stock 3,200 Indirect
Oct. 7, 2015 CTMX Stock Option (right to buy)→ Common Stock (31,767) 31,767 Direct
Oct. 7, 2015 CTMX Stock Option (right to buy)→ Common Stock (16,612) 16,612 Direct
Oct. 7, 2015 CTMX Stock Option (right to buy)→ Common Stock (27,606) 27,606 Direct
Oct. 7, 2015 CTMX Stock Option (right to buy)→ Common Stock (17,139) 17,139 Direct