Insider · CIK 0002088549

Atay Oguzhan

Reports to the SEC for 1 company · MENLO PARK, CA

sec.gov

Transactions

Companies

Filings

CIK

0002088549

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-10-15	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+5,150 sh	$2.80	+$14.4K	5,150
2026-10-15	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−900 sh	$98.43	−$88.6K	4,250
2026-10-15	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,861 sh	$99.84	−$186K	2,389
2026-10-15	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,276 sh	$100.60	−$128K	1,113
2026-10-15	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−980 sh	$101.79	−$99.8K	133
2026-10-15	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−133 sh	$102.78	−$13.7K	0
2026-10-15	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−5,150 sh	$2.80	−$14.4K	468,629
2026-10-14	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+3,183 sh	$2.80	+$8,912.4	3,183
2026-10-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−3,083 sh	$98.32	−$303K	100
2026-10-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−100 sh	$99.00	−$9,900	0
2026-10-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,667 sh	$98.00	−$261K	149,168
2026-10-14	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−3,183 sh	$2.80	−$8,912.4	473,779
2026-10-12	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+16.7K sh	$2.80	+$46.7K	16,667
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,961 sh	$91.57	−$180K	14,706
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,553 sh	$93.05	−$238K	12,153
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−6,763 sh	$93.65	−$633K	5,390
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−3,869 sh	$94.61	−$366K	1,521
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,521 sh	$96.39	−$147K	0
2026-10-12	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,667 sh	$97.61	−$260K	151,835
2026-10-12	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−16.7K sh	$2.80	−$46.7K	476,962
2026-09-28	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+8,333 sh	$2.80	+$23.3K	8,333
2026-09-28	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−8,333 sh	$120.64	−$1.01M	0
2026-09-28	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,666 sh	$120.64	−$322K	154,502
2026-09-28	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−8,333 sh	$2.80	−$23.3K	493,629
2026-09-14	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+16.7K sh	$2.80	+$46.7K	16,666
2026-09-14	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+8,333 sh	$2.80	+$23.3K	24,999
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−4,465 sh	$98.63	−$440K	20,534
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,456 sh	$99.57	−$245K	18,078
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,531 sh	$100.58	−$255K	15,547
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−7,214 sh	$101.44	−$732K	8,333
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,680 sh	$98.64	−$166K	6,653
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−1,500 sh	$99.57	−$149K	5,153
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,010 sh	$100.78	−$203K	3,143
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−3,143 sh	$101.49	−$319K	0
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,666 sh	$98.00	−$261K	159,834
2026-09-14	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−2,666 sh	$98.00	−$261K	157,168
2026-09-14	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−16.7K sh	$2.80	−$46.7K	510,295
2026-09-14	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−8,333 sh	$2.80	−$23.3K	501,962
2026-09-09	BLLNBillionToOne, Inc.G Gift	Director, Chairman and CEO	GGift	−20K sh	—	—	0
2026-09-08	BLLNBillionToOne, Inc.C Conversion	Director, Chairman and CEO	CConversion	+20K sh	—	—	20,000
2026-09-08	BLLNBillionToOne, Inc. · Class B Common StockC Conversion	Director, Chairman and CEO	CConversion	−20K sh	—	—	2,197,542
2026-08-05	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+15.5K sh	$2.80	+$43.5K	15,539
2026-08-05	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−15.5K sh	$150.03	−$2.33M	0
2026-08-05	BLLNBillionToOne, Inc. · Stock Option (right to buy)M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	−15.5K sh	$2.80	−$43.5K	526,961
2026-08-03	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+20K sh	$2.80	+$56K	20,000
2026-08-03	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+6,250 sh	$2.80	+$17.5K	26,250
2026-08-03	BLLNBillionToOne, Inc.M Exercise/Conversion	Director, Chairman and CEO	MExercise/Conversion	+6,250 sh	$2.80	+$17.5K	32,500
2026-08-03	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−269 sh	$133.01	−$35.8K	32,231
2026-08-03	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−555 sh	$133.81	−$74.3K	31,676
2026-08-03	BLLNBillionToOne, Inc.S Sale	Director, Chairman and CEO	SSale	−135 sh	$135.42	−$18.3K	31,541

Recent filings

Accepted (ET)
Oct 164
Atay Oguzhan0002088549-26-000015
SEC(opens sec.gov)
Oct 144
Atay Oguzhan0002070849-26-000072
SEC(opens sec.gov)

Companies

BillionToOne, Inc.Director, Chairman and CEOBLLN

Address

C/O BILLIONTOONE, INC. 1035 O'BRIEN DRIVE

MENLO PARK, CA, 94025