Insider · CIK 0001873083

Ball Jack

Reports to the SEC for 1 company · FREMONT, CA

sec.gov

Transactions

Companies

Filings

CIK

0001873083

Forms 4 and 5

Insider transactions

18 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-06-10	CTKBCytek Biosciences, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+44K sh	—	—	86,678
2026-06-10	CTKBCytek Biosciences, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−44K sh	—	—	0
2025-06-18	CTKBCytek Biosciences, Inc. · Restricted Stock UnitsA Award	Director	AAward	+44K sh	—	—	43,973
2025-06-18	CTKBCytek Biosciences, Inc. · Director Stock Option (right to buy)A Award	Director	AAward	+23.8K sh	—	—	23,809
2025-06-05	CTKBCytek Biosciences, Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−15.7K sh	—	—	0
2025-06-05	CTKBCytek Biosciences, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+15.7K sh	—	—	42,705
2024-06-05	CTKBCytek Biosciences, Inc. · Stock Option (right to buy)A Award	Director	AAward	+23.1K sh	—	—	23,076
2024-06-05	CTKBCytek Biosciences, Inc. · Restricted Stock UnitsA Award	Director	AAward	+15.7K sh	—	—	15,706
2023-06-14	CTKBCytek Biosciences, Inc. · Stock Option (right to buy)A Award	Director	AAward	+30.2K sh	—	—	30,242
2022-11-29	CTKBCytek Biosciences, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−13.3K sh	—	—	0
2022-11-29	CTKBCytek Biosciences, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+10.7K sh	$0.40	+$4,266.4	13,666
2022-11-29	CTKBCytek Biosciences, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+13.3K sh	$0.92	+$12.3K	26,999
2022-11-29	CTKBCytek Biosciences, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−10.7K sh	—	—	0
2022-11-14	CTKBCytek Biosciences, Inc.S Sale	Director	SSale	−16K sh	$14.69	−$235K	3,000
2022-11-14	CTKBCytek Biosciences, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+16K sh	$0.40	+$6,400	19,000
2022-11-14	CTKBCytek Biosciences, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−16K sh	—	—	10,666
2022-06-01	CTKBCytek Biosciences, Inc. · Stock Option (right to buy)A Award	Director	AAward	+25.8K sh	—	—	25,789
2021-07-22	CTKBCytek Biosciences, Inc.P Purchase	Director	PPurchase	+3,000 sh	$17.00	+$51K	3,000

Recent filings

Accepted (ET)
Jun 124
Ball Jack0001873083-26-000001
SEC(opens sec.gov)
Jun 204
Ball Jack0001415889-25-017844
SEC(opens sec.gov)
Jun 94
Ball Jack0001415889-25-016312
SEC(opens sec.gov)
Jun 74
Ball Jack0001415889-24-016081
SEC(opens sec.gov)
Jun 164
Ball Jack0001209191-23-038076
SEC(opens sec.gov)
Nov 304
Ball Jack0001209191-22-059113
SEC(opens sec.gov)
Nov 164
Ball Jack0001209191-22-057368
SEC(opens sec.gov)
Jun 34
Ball Jack0001209191-22-034261
SEC(opens sec.gov)
Jul 274
Ball Jack0001209191-21-048388
SEC(opens sec.gov)

Companies

Cytek Biosciences, Inc.DirectorCTKB

Address

C/O CYTEK BIOSCIENCES, INC. 47215 LAKEVIEW BLVD.

FREMONT, CA, 94538