Summary
Updated Aug 30, 2026
Topsoe Holding A/S files SEC Form 4 reports at IGM Biosciences, Inc. (IGMS). 1 SEC Form 4 filing on record, dated 14 August 2025.
Recent Transactions
1Every recent SEC Form 4 transaction Topsoe Holding A/S has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Topsoe Holding A/S. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Mary Beth Harler - $31K of IGMS open-market activity on record
- Misbah Tahir - $24K of IGMS open-market activity on record
- Lisa Lynn Decker - $14K of IGMS open-market activity on record
- Steven Weber - $4K of IGMS open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is Topsoe Holding A/S?
Topsoe Holding A/S is a corporate entity of IGM Biosciences, Inc. (IGMS). InsiderAlpha holds 1 primary Form 4 filing for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Topsoe Holding A/S last file a Form 4?
The only primary Form 4 on record is dated 14 August 2025.
Where can I see all of Topsoe Holding A/S'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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