Insider trading · Q3 2026 · CIK 2070849

BillionToOne, Inc. (BLLN) insider trading.

Name: BillionToOne, Inc. insider transactions, Q3 2026
Creator: U.S. Securities and Exchange Commission

In Q3 2026, insiders at BillionToOne, Inc. reported 170 non-derivative transactions on 28 Forms 3, 4 and 5: 0 open-market purchases and 120 sales worth $36.8M.

Transactions: 170
Purchases (P): 0
Sales (S): 120
Net shares, P minus S: -311,313
Insiders: 7
Last filed: 2026-09-30

Insiders

Insider	Relationship	Transactions	Sales
Atay Oguzhan	Director, Officer · Chairman and CEO	80	68
Lynch Thomas P.	Officer · See Remarks	25	17
Tsao David	Director, Officer · Chief Technology Officer	24	15
Kolluri Krishna Kittu	Director	16	0
Sakakibara Shan Riku	Officer · Chief Product Officer	11	6
ten Bosch John Roderick	Officer · SVP of Laboratory Operations	9	9
Johnson Nancy JoAnn	Officer · See Remarks	5	5

Transactions

Newest 150 of 170 non-derivative rows, newest transaction first. Shares and prices as filed.
Date	Insider	Code	Shares	Price	Owned after	Filing
2026-09-28	Atay Oguzhan	M (A)	8,333	$2.8	8,333	Form 4
2026-09-28	Atay Oguzhan	S (D)	2,666	$120.64	154,502	Form 4
2026-09-28	Atay Oguzhan	S (D)	8,333	$120.64	0	Form 4
2026-09-24	ten Bosch John Roderick	S (D)	1,416	$120	22,219	Form 4
2026-09-24	Tsao David	M (A)	3,333	$2.8	4,333	Form 4
2026-09-24	Tsao David	S (D)	3,333	$125	1,000	Form 4
2026-09-21	ten Bosch John Roderick	S (D)	1,416	$106.61	23,635	Form 4
2026-09-17	Lynch Thomas P.	S (D)	2,920	$110.31	6,540	Form 4
2026-09-17	Lynch Thomas P.	S (D)	5,840	$110.29	700	Form 4
2026-09-17	Lynch Thomas P.	S (D)	6,968	$110.3	9,460	Form 4
2026-09-17	Lynch Thomas P.	S (D)	19,384	$110.36	16,428	Form 4
2026-09-17	Lynch Thomas P.	M (A)	5,840	$30.78	35,812	Form 4
2026-09-17	Lynch Thomas P.	M (A)	2,920	$17.12	29,972	Form 4
2026-09-17	Lynch Thomas P.	M (A)	6,968	$11.55	27,052	Form 4
2026-09-17	Lynch Thomas P.	M (A)	19,384	$8.65	20,084	Form 4
2026-09-14	Atay Oguzhan	S (D)	2,010	$100.78	3,143	Form 4
2026-09-14	Atay Oguzhan	S (D)	3,143	$101.49	0	Form 4
2026-09-14	Atay Oguzhan	S (D)	2,666	$98	159,834	Form 4
2026-09-14	Atay Oguzhan	S (D)	2,666	$98	157,168	Form 4
2026-09-14	Atay Oguzhan	M (A)	16,666	$2.8	16,666	Form 4
2026-09-14	Atay Oguzhan	S (D)	1,500	$99.57	5,153	Form 4
2026-09-14	Atay Oguzhan	S (D)	4,465	$98.63	20,534	Form 4
2026-09-14	Atay Oguzhan	S (D)	2,456	$99.57	18,078	Form 4
2026-09-14	Atay Oguzhan	S (D)	2,531	$100.58	15,547	Form 4
2026-09-14	Atay Oguzhan	S (D)	7,214	$101.44	8,333	Form 4
2026-09-14	Atay Oguzhan	S (D)	1,680	$98.64	6,653	Form 4
2026-09-14	Atay Oguzhan	M (A)	8,333	$2.8	24,999	Form 4
2026-09-10	Sakakibara Shan Riku	G (D)	3,500	$0	196,500	Form 4
2026-09-09	ten Bosch John Roderick	S (D)	1,416	$97.54	25,051	Form 4
2026-09-09	Tsao David	M (A)	10,000	$2.8	11,000	Form 4
2026-09-09	Tsao David	M (A)	10,000	$2.8	21,000	Form 4
2026-09-09	Tsao David	S (D)	10,000	$97.54	11,000	Form 4
2026-09-09	Tsao David	S (D)	10,000	$100	1,000	Form 4
2026-09-09	Atay Oguzhan	G (D)	20,000	$0	0	Form 4
2026-09-08	Atay Oguzhan	C (A)	20,000	$0	20,000	Form 4
2026-09-08	Lynch Thomas P.	M (A)	3,326	$30.78	20,700	Form 4
2026-09-08	Lynch Thomas P.	S (D)	232	$100.92	700	Form 4
2026-09-08	Lynch Thomas P.	M (A)	3,969	$11.55	15,711	Form 4
2026-09-08	Lynch Thomas P.	M (A)	11,042	$8.65	11,742	Form 4
2026-09-08	Lynch Thomas P.	S (D)	358	$100.82	5,689	Form 4
2026-09-08	Lynch Thomas P.	S (D)	2,518	$100.2	932	Form 4
2026-09-08	Lynch Thomas P.	S (D)	385	$99.22	5,304	Form 4
2026-09-08	Lynch Thomas P.	S (D)	1,131	$100.33	4,173	Form 4
2026-09-08	Lynch Thomas P.	S (D)	147	$101.41	4,026	Form 4
2026-09-08	Lynch Thomas P.	S (D)	576	$98.89	3,450	Form 4
2026-09-08	Lynch Thomas P.	S (D)	2,997	$100.11	6,047	Form 4
2026-09-08	Lynch Thomas P.	S (D)	614	$99	9,044	Form 4
2026-09-08	Lynch Thomas P.	M (A)	1,663	$17.12	17,374	Form 4
2026-09-08	Lynch Thomas P.	S (D)	38	$96.47	20,662	Form 4
2026-09-08	Lynch Thomas P.	S (D)	775	$100.83	9,658	Form 4
2026-09-08	Lynch Thomas P.	S (D)	8,285	$100.12	10,433	Form 4
2026-09-08	Lynch Thomas P.	S (D)	1,944	$98.97	18,718	Form 4
2026-09-08	Tsao David	G (D)	20,000	$0	1,000	Form 4
2026-09-03	Tsao David	C (A)	20,000	$0	21,000	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	129,780	$0	908,459	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	5,644	$0	57,839	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	7,980	$0	0	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	24,222	$0	169,550	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	2,405	$0	2,405	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	2,405	$0	0	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	271,028	$0	1,897,202	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	38,106	$0	38,106	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	38,106	$0	0	Form 4
2026-08-26	Kolluri Krishna Kittu	J (D)	10,921	$0	76,441	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	719	$0	2,157	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	719	$0	2,157	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	5,761	$0	35,285	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	1,666	$0	36,951	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	15,244	$0	52,195	Form 4
2026-08-26	Kolluri Krishna Kittu	J (A)	7,980	$0	7,980	Form 4
2026-08-25	ten Bosch John Roderick	S (D)	1,417	$100	26,467	Form 4
2026-08-25	Tsao David	M (A)	10,000	$2.8	11,000	Form 4
2026-08-25	Tsao David	S (D)	10,000	$100	1,000	Form 4
2026-08-10	Tsao David	S (D)	10,000	$92.86	1,000	Form 4
2026-08-10	Tsao David	M (A)	10,000	$2.8	11,000	Form 4
2026-08-10	ten Bosch John Roderick	S (D)	1,417	$92.86	27,884	Form 4
2026-08-05	Atay Oguzhan	M (A)	15,539	$2.8	15,539	Form 4
2026-08-05	Atay Oguzhan	S (D)	15,539	$150.03	0	Form 4
2026-08-03	Atay Oguzhan	S (D)	762	$138.09	6,332	Form 4
2026-08-03	Atay Oguzhan	S (D)	9,989	$137.25	15,198	Form 4
2026-08-03	Atay Oguzhan	S (D)	6,354	$136.42	25,187	Form 4
2026-08-03	Atay Oguzhan	S (D)	135	$135.42	31,541	Form 4
2026-08-03	Atay Oguzhan	S (D)	267	$139.21	12,500	Form 4
2026-08-03	Atay Oguzhan	S (D)	2,431	$138.09	12,767	Form 4
2026-08-03	Atay Oguzhan	S (D)	3,124	$137.25	7,094	Form 4
2026-08-03	Atay Oguzhan	S (D)	1,981	$136.42	10,218	Form 4
2026-08-03	Atay Oguzhan	S (D)	44	$135.41	12,199	Form 4
2026-08-03	Atay Oguzhan	S (D)	173	$133.81	12,243	Form 4
2026-08-03	Atay Oguzhan	S (D)	84	$133	12,416	Form 4
2026-08-03	Atay Oguzhan	M (A)	20,000	$2.8	20,000	Form 4
2026-08-03	Atay Oguzhan	S (D)	555	$133.81	31,676	Form 4
2026-08-03	Atay Oguzhan	S (D)	269	$133.01	32,231	Form 4
2026-08-03	Atay Oguzhan	M (A)	6,250	$2.8	32,500	Form 4
2026-08-03	Atay Oguzhan	M (A)	6,250	$2.8	26,250	Form 4
2026-08-03	Atay Oguzhan	S (D)	6,250	$137.37	162,500	Form 4
2026-08-03	Atay Oguzhan	S (D)	6,250	$137.37	168,750	Form 4
2026-08-03	Atay Oguzhan	S (D)	82	$139.2	0	Form 4
2026-08-03	Atay Oguzhan	S (D)	760	$138.09	82	Form 4
2026-08-03	Atay Oguzhan	S (D)	3,125	$137.25	842	Form 4
2026-08-03	Atay Oguzhan	S (D)	1,983	$136.42	3,967	Form 4
2026-08-03	Atay Oguzhan	S (D)	43	$135.41	5,950	Form 4
2026-08-03	Atay Oguzhan	S (D)	173	$133.81	5,993	Form 4
2026-08-03	Atay Oguzhan	S (D)	84	$133.01	6,166	Form 4
2026-08-03	Atay Oguzhan	S (D)	82	$139.21	6,250	Form 4
2026-07-31	Sakakibara Shan Riku	S (D)	4,000	$140.21	200,000	Form 4
2026-07-16	Johnson Nancy JoAnn	S (D)	5,559	$127.89	13,407	Form 4
2026-07-16	Johnson Nancy JoAnn	S (D)	906	$129.78	6,900	Form 4
2026-07-16	Johnson Nancy JoAnn	S (D)	5,601	$128.96	7,806	Form 4
2026-07-16	Johnson Nancy JoAnn	S (D)	2,133	$126.98	18,966	Form 4
2026-07-13	ten Bosch John Roderick	S (D)	1,417	$125.46	30,718	Form 4
2026-07-13	ten Bosch John Roderick	S (D)	1,417	$125.46	32,135	Form 4
2026-07-13	ten Bosch John Roderick	S (D)	1,417	$125.46	29,301	Form 4
2026-07-13	Tsao David	S (D)	2,415	$124.9	15,006	Form 4
2026-07-13	Tsao David	S (D)	3,185	$125.85	11,821	Form 4
2026-07-13	Tsao David	S (D)	821	$126.89	11,000	Form 4
2026-07-13	Tsao David	S (D)	1,138	$122.84	9,862	Form 4
2026-07-13	Tsao David	S (D)	2,274	$123.71	7,588	Form 4
2026-07-13	Tsao David	S (D)	1,725	$124.65	5,863	Form 4
2026-07-13	Tsao David	S (D)	3,835	$125.76	2,028	Form 4
2026-07-13	Tsao David	S (D)	1,028	$126.9	1,000	Form 4
2026-07-13	Tsao David	S (D)	2,477	$123.84	17,421	Form 4
2026-07-13	Tsao David	S (D)	1,102	$122.9	19,898	Form 4
2026-07-13	Tsao David	M (A)	10,000	$2.8	11,000	Form 4
2026-07-13	Tsao David	M (A)	10,000	$2.8	21,000	Form 4
2026-07-09	Sakakibara Shan Riku	S (D)	1,355	$125	205,354	Form 4
2026-07-09	Sakakibara Shan Riku	S (D)	1,354	$125	204,000	Form 4
2026-07-09	Sakakibara Shan Riku	S (D)	1,117	$125	206,709	Form 4
2026-07-09	Sakakibara Shan Riku	M (A)	174	$8.65	208,174	Form 4
2026-07-09	Sakakibara Shan Riku	M (A)	1,117	$30.78	209,291	Form 4
2026-07-09	Sakakibara Shan Riku	M (A)	1,355	$30.78	210,646	Form 4
2026-07-09	Sakakibara Shan Riku	M (A)	1,354	$30.78	212,000	Form 4
2026-07-09	Sakakibara Shan Riku	S (D)	4,000	$125	208,000	Form 4
2026-07-09	Sakakibara Shan Riku	S (D)	174	$125	207,826	Form 4
2026-07-09	Atay Oguzhan	S (D)	7,489	$125.43	5,011	Form 4
2026-07-09	Atay Oguzhan	S (D)	2,002	$126.48	3,009	Form 4
2026-07-09	Atay Oguzhan	S (D)	2,657	$127.44	352	Form 4
2026-07-09	Atay Oguzhan	S (D)	352	$128.23	0	Form 4
2026-07-09	Atay Oguzhan	M (A)	12,500	$2.8	12,500	Form 4
2026-07-06	Atay Oguzhan	S (D)	412	$118.49	5,838	Form 4
2026-07-06	Atay Oguzhan	S (D)	1,138	$119.36	4,700	Form 4
2026-07-06	Atay Oguzhan	S (D)	570	$120.66	4,130	Form 4
2026-07-06	Atay Oguzhan	S (D)	349	$121.84	3,781	Form 4
2026-07-06	Atay Oguzhan	S (D)	1,945	$123.07	1,836	Form 4
2026-07-06	Atay Oguzhan	S (D)	1,642	$123.81	194	Form 4
2026-07-06	Atay Oguzhan	S (D)	194	$124.61	0	Form 4
2026-07-06	Atay Oguzhan	S (D)	1,034	$118.81	186,466	Form 4
2026-07-06	Atay Oguzhan	S (D)	591	$119.67	185,875	Form 4
2026-07-06	Atay Oguzhan	S (D)	444	$120.69	185,431	Form 4
2026-07-06	Atay Oguzhan	S (D)	587	$122.08	184,844	Form 4
2026-07-06	Atay Oguzhan	S (D)	2,323	$123.25	182,521	Form 4

Transaction codes in this quarter

S: 120 M: 29 J: 16 G: 3 C: 2

Get BLLN insider transactions through the API

Request with your API key

curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=2070849&limit=100" \
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Insider trading API guide · BLLN company page · BillionToOne, Inc. on SEC.gov

Questions

Are insiders buying or selling BillionToOne, Inc. (BLLN)?

In Q3 2026, insiders at BillionToOne, Inc. reported 170 non-derivative transactions on 28 Forms 3, 4 and 5: 0 open-market purchases and 120 sales worth $36.8M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.

Where do these BillionToOne, Inc. insider trades come from?

From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.

Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.

Plain-text version for agents and LLMs: /insider-trading/blln.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.