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Who

Oguzhan Atay

Chairman and CEO

Company insider

Files Form 4 as: Chairman and CEO, BillionToOne.

Every Form 4 they filed

In numbers

Trades disclosed
250
Buys
0
Sells
10
Bought
$0
Sold
$48.8M
Companies
1
Companies where not an officer
0
First trade
7 Nov 2025
Last trade
15 Oct 2026
Last filed
16 Oct 2026

Companies traded

Where they are an officer
BLLN BillionToOneDirector, Officer · Diagnostics & Labs · last 15 Oct 20260 buys · 10 sells

Activity over time

1 Jun – 1 Oct
30Jun 26Jul 26Aug 26Sep 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$14K5,150 at $2.80filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$14K5,150 at $2.80filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$89K900 at $98.43filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$186K1,861 at $99.84filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$128K1,276 at $100.60filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$100K980 at $101.79filing
15 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$14K133 at $102.78filing
14 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$8,9123,183 at $2.80filing
14 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$261K2,667 at $98.00filing
14 Oct 2026filed 16 Oct 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$8,9123,183 at $2.80filing
14 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$303K3,083 at $98.32filing
14 Oct 2026filed 16 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$9,900100 at $99.00filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$47K16,667 at $2.80filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$180K1,961 at $91.57filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$238K2,553 at $93.05filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$633K6,763 at $93.65filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$366K3,869 at $94.61filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$147K1,521 at $96.39filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$260K2,667 at $97.61filing
12 Oct 2026filed 14 Oct 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$47K16,667 at $2.80filing

Sectors

Health Care10

Buys in green, sells in red, by the company’s sector.

Related people

Thomas P. LynchOfficer · Officer at BillionToOne, filing Form 4 there in the last year
John Roderick ten BoschSVP of Laboratory Operations · SVP of Laboratory Operations at BillionToOne, filing Form 4 there in the last year
David TsaoChief Technology Officer · Chief Technology Officer at BillionToOne, filing Form 4 there in the last year
Shan Riku SakakibaraChief Product Officer · Chief Product Officer at BillionToOne, filing Form 4 there in the last year
Krishna Kittu KolluriDirector · Director at BillionToOne, filing Form 4 there in the last year