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Who

Ross Taylor

Director

Company insider

Files Form 4 as: Director, QT Imaging Holdings; Chief Financial Officer, BillionToOne.

In numbers

Trades disclosed
11
Buys
1
Sells
0
Bought
$99K
Sold
$0
Companies
2
Companies where not an officer
1
First trade
3 Jul 2024
Last trade
20 Mar 2026
Last filed
24 Mar 2026

Companies traded

Where they are an officer
BLLN BillionToOneOfficer · Diagnostics & Labs · last 7 Nov 20250 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
QTI QT Imaging HoldingsDirector · Medical Devices · last 20 Mar 20261 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
01Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
20 Mar 2026filed 24 Mar 2026QTI QT Imaging HoldingsMedical DevicesSEC FORM 4 Code A—3,500 at $0.00filing
20 Mar 2026filed 24 Mar 2026QTI QT Imaging HoldingsMedical DevicesSEC FORM 4 Code A—3,500 at $0.00filing
7 Nov 2025filed 12 Nov 2025BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code J—175,000filing
7 Nov 2025filed 12 Nov 2025BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code J—175,000filing
7 Nov 2025filed 12 Nov 2025BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code J—75,000filing
7 Nov 2025filed 12 Nov 2025BLLN BillionToOneoption or derivative · Diagnostics & LabsSEC FORM 4 Code J—75,000filing
11 Aug 2025filed 13 Aug 2025QTI QT Imaging Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code A—25,000 at $0.00filing
21 Apr 2025filed 23 Apr 2025QTI QT Imaging Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code A—85,000 at $0.00filing
12 Nov 2024filed 14 Nov 2024QTI QT Imaging Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code P—171,232 at $0.00filing
12 Nov 2024filed 14 Nov 2024QTI QT Imaging HoldingsMedical DevicesSEC FORM 4 Bought$99K171,232 at $0.58filing
3 Jul 2024filed 9 Jul 2024QTI QT Imaging Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code A—40,000 at $0.00filing

News

Alabama Senate Democrats' top staffer Amanda Brown joins Ross Taylor & Associatesyellowhammernews.com · 19 Oct 2026Comparing QT Imaging (NASDAQ:QTI) & Intelligent Bio Solutions (NASDAQ:INBS)QTI · themarketsdaily.com · 14 Oct 2026

1 headline in the last 90 days name Ross Taylor; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care1

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
Shan Riku SakakibaraChief Product Officer · Chief Product Officer at BillionToOne, filing Form 4 there in the last year