Summary
Updated Aug 31, 2026
Sierk Poetting is Chief Operating Officer of BioNTech SE (BNTX). 2 SEC Form 4 filings on record, most recently on 13 May 2026. Most recent open-market trade: sold $5.53M of BNTX on 23 April 2026. Lifetime open-market sales: $5.53M.
Recent Transactions
1Every recent SEC Form 4 transaction Sierk Poetting has reported, most recent first.
Most Active Insiders Right Now
Sierk Poetting has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- KL Pattern Holdings LP - $166.93M of PTRN open-market activity in the last 90 days
- Silver Lake Partners V DE (AIV), L.P. - $165.05M of DELL open-market activity in the last 90 days
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- Sean Lie - $157.48M of CBRS open-market activity in the last 90 days
- John B. Hess - $157.37M of CVX open-market activity in the last 90 days
- Mark Barrocas - $156.00M of SN open-market activity in the last 90 days
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Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Sierk Poetting?
Sierk Poetting is a corporate insider, tracked as Chief Operating Officer of BioNTech SE (BNTX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Sierk Poetting last file a Form 4?
The most recent primary Form 4 on record is dated 13 May 2026, one of 2 filings going back to 2026.
Has Sierk Poetting been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($5.53M) across all tracked filings.
Where can I see all of Sierk Poetting'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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