Latest filingSep 18, 2026Most recent Form 4
MBBC
Marathon Bancorp, Inc. /MD/
NasdaqFinancialsSavings Institutions, Not Federally Chartered
Insider activity for last month from 08/19 to 09/19. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$00 sells
Net open-market+$01 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period4transactions
- M · Option exercise · dominant4 · 100%
Activity by reported role
A joint filing can contribute to multiple roles4transactions
- EC · dominant4 · 100%
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (1)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeSpatz NoraStock Options · Direct
1,199Sep 18, 2026
Spatz NoraCommon Stock · Direct
28,297Sep 18, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 19 → Sep 19
LessMore
Top insiders
By absolute net value across the selected period- SN+$16.0k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
No filing-only signal badges matched this period.
MBBC transaction history
Filters apply within this company and selected period by defaultLatest insider transactions
Form 4 filings from last month. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #225647 | MBBC | Spatz Nora | EC | exercise | 962 | $0 | M | 09/18 | 09/18 |
| #225646 | MBBC | Spatz Nora | EC | exercise | 1.20k | $0 | M | 09/18 | 09/18 |
| #225645 | MBBC | Spatz Nora | EC | exercise | 962 | $623k | M | 09/18 | 09/18 |
| #225644 | MBBC | Spatz Nora | EC | exercise | 1.20k | $976k | M | 09/18 | 09/18 |
Marathon Bancorp, Inc. /MD/ Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Marathon Bancorp, Inc. /MD/?
Spatz Nora.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
No code-S sale is available for this period.
What is the recent purchase and sale balance?
No code-P purchases or code-S sales were reported in the selected period.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.