Summary
Updated Aug 31, 2026
Michael E. Koester has 4 SEC Form 4 filings on record going back to 2025, most recently on 28 July 2026.
Recent Transactions
6Every recent SEC Form 4 transaction Michael E. Koester has reported, most recent first.
- 5C Lending Partners Corp.A - Grant or award
16.5K shares @ $24.29$400K
- 5C Lending Partners Corp.A - Grant or award
6.3K shares @ $24.29$153K
- 5C Lending Partners Corp.A - Grant or award
1.4K shares @ $25.23$35K
- 5C Lending Partners Corp.A - Grant or award
5.6K shares @ $25.23$140K
- 5C Lending Partners Corp.A - Grant or award
94.0K shares @ $25.26$2.37M
- 5C Lending Partners Corp.A - Grant or award
63.1K shares @ $24.73$1.56M
Trading Pattern
InsiderAlpha's records for Michael E. Koester go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Most Active Insiders Right Now
Michael E. Koester has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- BVF PARTNERS L P - $173.67M of KYMR open-market activity 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
- GIC Private Ltd - $158.25M of MDLN open-market activity in the last 90 days
- 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Michael E. Koester?
Michael E. Koester is a corporate insider, tracked as Co-President, Director, 10% Owner. InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Michael E. Koester last file a Form 4?
The most recent primary Form 4 on record is dated 28 July 2026, one of 4 filings going back to 2025.
Where can I see all of Michael E. Koester'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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