Summary
Updated Aug 31, 2026
Danielle Lambert is Director of Horizon Quantum Holdings Ltd. (HQ). 1 SEC Form 4 filing on record, dated 25 March 2026. Most recent open-market trade: bought $1000K of HQ on 25 March 2026. Lifetime open-market purchases: $1000K.
Recent Transactions
1Every recent SEC Form 4 transaction Danielle Lambert has reported, most recent first.
Most Active Insiders Right Now
Danielle Lambert has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- J.H. Whitney Equity Partners VII, LLC - $232.77M of AVAH open-market activity in the last 90 days
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- Ernesto Bertarelli - $219.00M of MAIR open-market activity in the last 90 days
- BBRC INTERNATIONAL PTE LTD - $212.35M of VSXY open-market activity in the last 90 days
- Peter A. Feld - $192.29M of QRVO open-market activity in the last 90 days
- Nathan Blecharczyk - $190.48M of ABNB open-market activity in the last 90 days
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Frequently Asked Questions
Who is Danielle Lambert?
Danielle Lambert is a corporate insider, tracked as Director of Horizon Quantum Holdings Ltd. (HQ). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Danielle Lambert last file a Form 4?
The only primary Form 4 on record is dated 25 March 2026.
Has Danielle Lambert been buying or selling stock?
Recorded transactions: 1 open-market purchase ($1000K) and 0 open-market sales across all tracked filings.
Where can I see all of Danielle Lambert's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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