Michelle Knopf - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Michelle Knopf has filed 4 SEC Form 4 filings across 1 company in the last 90 days - buying. Lifetime open-market purchases: $15K.
Profile
Michelle Knopf holds the role of EVP and COO at Marathon Bancorp, Inc. (MBBC). Knopf has reported 6 insider filings with the SEC since 2025. The most recent filing was in June 2026.
| Role | EVP and COO |
|---|---|
| Notability | 34/100 |
Board memberships
- Marathon Bancorp, Inc. /MD/
Reported roles
- EVP and COO
Trading Pattern
InsiderAlpha's records for Michelle Knopf go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $2K (6 buys totaling $15K). The largest single buy on record is $8K of MBBC in 2026. 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.
Career & Filing History
Every role Michelle Knopf has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- EVP and COO at Marathon Bancorp, Inc. /MD/ (MBBC) - 6 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-30 | MBBC | Marathon Bancorp, Inc. /MD/ | F - Tax withholding / forfeiture | 225 | $15.49 | $3K |
| 2026-06-16 | MBBC | Marathon Bancorp, Inc. /MD/ | A - Grant or award | 5.5K | $0.00 | |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 164 | $14.75 | $2K |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 519 | $14.50 | $8K |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 54 | $14.24 | $769 |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 87 | $14.25 | $1K |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 20 | $13.77 | $275 |
| 2026-06-11 | MBBC | Marathon Bancorp, Inc. /MD/ | P - Open-market purchase | 197 | $13.75 | $3K |
| 2026-05-19 | MBBC | Marathon Bancorp, Inc. /MD/ | F - Tax withholding / forfeiture | 86 | $14.50 | $1K |
| 2025-12-03 | MBBC | Marathon Bancorp, Inc. /MD/ | J - Other acquisition / disposition | 20 | $11.30 | $226 |
| 2025-12-03 | MBBC | Marathon Bancorp, Inc. /MD/ | J - Other acquisition / disposition | 536 | $11.11 | $6K |
| 2025-12-03 | MBBC | Marathon Bancorp, Inc. /MD/ | J - Other acquisition / disposition | 1.4K | $11.27 | $16K |
| 2025-06-28 | MBBC | Marathon Bancorp, Inc. /MD/ | F - Tax withholding / forfeiture | 197 | $9.99 | $2K |
Companies - Last 90 Days
- Marathon Bancorp, Inc. /MD/ (MBBC) - 4 filings, last 2026-06-30
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Michelle Knopf has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Nicholas W. Zillges - $57K of MBBC open-market activity in the last 12 months
- Nora Spatz - $55K of MBBC open-market activity in the last 12 months
- Terry Cornish - $20K of MBBC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Andrew J. Mills
- Charles N. Mills
- Kevin J. Mills
- Mink Brook Asset Management LLC
- Shankh Mitra
- MITSUI SUMITOMO INSURANCE CO LTD
- Arturo R. Moreno
- Matthew T. Moroun
Frequently Asked Questions
Who is Michelle Knopf?
Michelle Knopf holds the role of EVP and COO at Marathon Bancorp, Inc. (MBBC). Knopf has reported 6 insider filings with the SEC since 2025. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Michelle Knopf submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Michelle Knopf been buying or selling stock?
Recorded transactions: 6 open-market purchases ($15K) and 0 open-market sales across all tracked filings.
Where can I see all of Michelle Knopf'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.
Learn More
Open the live Michelle Knopf profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.