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Who

Danielle Lambert

Director

Company insider

Files Form 4 as: Director, Horizon Quantum Holdings.

Every Form 4 they filed

In numbers

Trades disclosed
2
Buys
1
Sells
0
Bought
$2.0M
Sold
$0
Companies
1
Companies where not an officer
1
First trade
19 Mar 2026
Last trade
19 Mar 2026
Last filed
25 Mar 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
HQ Horizon Quantum HoldingsDirector · Quantum Computing · last 19 Mar 20261 buy · 0 sells

Activity over time

1 Mar – 1 Oct
01Mar 26May 26Jul 26Aug 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
19 Mar 2026filed 25 Mar 2026HQ Horizon Quantum HoldingsQuantum ComputingSEC FORM 4 Bought$1000K84,602 at $11.82filing
19 Mar 2026filed 25 Mar 2026HQ Horizon Quantum HoldingsQuantum ComputingSEC FORM 4 Bought$1000K84,602 at $11.82filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology1

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

Related people

Catherine Michele FitzsimonsCLO and CCO · CLO and CCO at Horizon Quantum Holdings, filing Form 4 there in the last year
Qian Yi Amanda ChewChief Product Officer · Chief Product Officer at Horizon Quantum Holdings, filing Form 4 there in the last year
Greg GouldChief Financial Officer · Chief Financial Officer at Horizon Quantum Holdings, filing Form 4 there in the last year
Si-Hui TanChief Science Officer · Chief Science Officer at Horizon Quantum Holdings, filing Form 4 there in the last year
Joseph Francis FitzsimonsChief Executive Officer · Chief Executive Officer at Horizon Quantum Holdings, filing Form 4 there in the last year