Timothy R Pearson

Insider

First SEC filing: June 11, 2026 · Latest: June 11, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 16 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

16 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 10, 2026	KRRO	A	14,677	—	—	14,677 Direct	—	Acquired	(price as of 2026-08-20)
June 11, 2025	KRRO	A	6,010	—	—	6,010 Direct	—	Acquired	(price as of 2026-08-20)
June 11, 2024	KRRO	A	5,190	—	—	5,190 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 3, 2023	KRRO	A	16,000	—	—	16,000 Direct	—	Acquired	(price as of 2026-08-20)
May 19, 2023	CBIO	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 11, 2022	CBIO	P	19,400	$1.29	$25,026	24,650 Direct	+369.52%	Acquired	-86.9% (price as of 2026-08-20)
May 18, 2022	CBIO	A	21,000	—	—	21,000 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2021	CBIO	A	10,500	—	—	10,500 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2021	CBIO	A	5,250	—	—	5,250 Direct	—	Acquired	(price as of 2026-08-20)
May 22, 2020	CBIO	A	21,000	—	—	21,000 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2019	CBIO	A	21,000	—	—	21,000 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2018	CBIO	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
May 25, 2017	CBIO	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2016	CBIO	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2016	CBIO	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
July 15, 2015	CBIO	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
March 31, 2014	CBIO	A	15,401	—	—	15,401 Direct	—	Acquired	(price as of 2026-08-20)

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.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 10, 2026	KRRO	Stock Option (Right to Buy)	Common Stock (14,677)	$10.59	June 9, 2036	14,677	Acquired
June 11, 2025	KRRO	Stock Option (Right to Buy)	Common Stock (6,010)	$14.87	June 10, 2035	6,010	Acquired
June 11, 2024	KRRO	Stock Option (Right to Buy)	Common Stock (5,190)	$42.19	June 10, 2034	5,190	Acquired
Nov. 3, 2023	KRRO	Stock Option (Right to Buy)	Common Stock (16,000)	$14.98	Nov. 2, 2033	16,000	Acquired
May 19, 2023	CBIO	Stock Option (right to buy)	Common Stock (35,000)	$1.98	May 18, 2033	35,000	Acquired
May 18, 2022	CBIO	Stock Option (right to buy)	Common Stock (21,000)	$0.60	May 17, 2032	21,000	Acquired
May 18, 2021	CBIO	Stock Option (right to buy)	Common Stock (10,500)	$2.55	May 17, 2031	10,500	Acquired
May 22, 2020	CBIO	Stock Option (right to buy)	Common Stock (21,000)	$3.00	May 21, 2030	21,000	Acquired
May 17, 2019	CBIO	Common Stock	Common Stock (21,000)	$12.39	May 16, 2029	21,000	Acquired
May 18, 2018	CBIO	Stock Option (right to buy)	Common Stock (11,000)	$18.41	May 17, 2028	11,000	Acquired
May 25, 2017	CBIO	Stock Option (right to buy)	Common Stock (11,000)	$13.89	May 24, 2027	11,000	Acquired
May 17, 2016	CBIO	Stock Option (right to buy)	Common Stock (11,000)	$6.35	May 16, 2026	11,000	Acquired
May 17, 2016	CBIO	Stock Option (right to buy)	Common Stock (11,000)	$6.35	May 16, 2026	11,000	Acquired
July 15, 2015	CBIO	Stock Option (right to buy)	Common Stock (11,000)	$7.50	July 14, 2025	11,000	Acquired
March 31, 2014	CBIO	Stock Option (right to buy)	Common Stock (15,401)	$16.33	March 31, 2024	15,401	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
April 1, 2014	CBIO	No securities beneficially owned	0	Direct