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Who

Shan Riku Sakakibara

Chief Product Officer

Company insider

Files Form 4 as: Chief Product Officer, BillionToOne.

Every Form 4 they filed

In numbers

Trades disclosed
50
Buys
0
Sells
4
Bought
$0
Sold
$6.5M
Companies
1
Companies where not an officer
0
First trade
7 Nov 2025
Last trade
10 Sep 2026
Last filed
14 Sep 2026

Companies traded

Where they are an officer
BLLN BillionToOneOfficer · Diagnostics & Labs · last 10 Sep 20260 buys · 4 sells

Activity over time

1 Jun – 1 Oct
20Jun 26Jul 26Aug 26Sep 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
10 Sep 2026filed 14 Sep 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code G—3,500 at $0.00filing
10 Sep 2026filed 14 Sep 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code G—3,500 at $0.00filing
31 Jul 2026filed 4 Aug 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$561K4,000 at $140.21filing
31 Jul 2026filed 4 Aug 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$561K4,000 at $140.21filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$1,505174 at $8.65filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$1,505174 at $8.65filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$34K1,117 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$42K1,355 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$42K1,354 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$34K1,117 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$42K1,355 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$1,505174 at $8.65filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$34K1,117 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$42K1,355 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code M$42K1,354 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Code M$42K1,354 at $30.78filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$500K4,000 at $125.00filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$22K174 at $125.00filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$140K1,117 at $125.00filing
9 Jul 2026filed 13 Jul 2026BLLN BillionToOneDiagnostics & LabsSEC FORM 4 Sold$169K1,355 at $125.00filing

Sectors

Health Care4

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
Oguzhan AtayChairman and CEO · Chairman and CEO 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
Krishna Kittu KolluriDirector · Director at BillionToOne, filing Form 4 there in the last year