Total buying$3.15k4 buys
CTM
Castellum, Inc.
NYSEConsumer DiscretionaryServices-Management Consulting Services
Insider activity for last month from 09/25 to 10/25.
How these metrics are calculated
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 selling$00 sells
Net open-market+$3.15kBuying minus selling
Active insiders4Distinct reporting owners
Insider activity report
Calendar-month buckets within the selected date range
Latest filing: Oct 01, 2026
Open-market transaction mix · 4 transactions in the selected period
Code A includes awards, grants and other acquisitions; these are not open-market buys. A rolling period can include partial calendar months.
View exact monthly counts and disclosed values
| Month | Buys | Sells | Awards (A) | Buy value | Sell value | Net P/S value |
|---|---|---|---|---|---|---|
| Sep 2026 | 0 | 0 | 0 | $0 | $0 | $0 |
| Oct 2026 | 4 | 0 | 0 | $3.15k | $0 | $3.15k |
Distinct insiders active
Reporting-owner CIKs by month · peak Oct 2026 (4)Sep 2026Oct 2026
Largest insider activity
By absolute net disclosed value · current transaction page- IR+$910
- ML+$747
- BT+$747
- MA+$747
CTM transaction history
Newest filings · 20 transactions per pageLatest insider transactions
Form 4 filings from last month.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
CTMCastellum, Inc. | Martin Tammy LGC · SECY | P · buySEC filing ↗ | $747View disclosure → | |
CTMCastellum, Inc. | Bell David TCFO | P · buySEC filing ↗ | $747View disclosure → | |
CTMCastellum, Inc. | Merriman AndrewCOO | P · buySEC filing ↗ | $747View disclosure → | |
CTMCastellum, Inc. | Ives Glen RPRES | P · buySEC filing ↗ | $910View disclosure → |
Filing-only signals
Deterministic matches in the selected period
Recent filing activity
Most recent 4 transactions on this page · color = transaction codeFiling detail checks
Secondary metrics for the selected periodTransaction codes
By Form 4 transaction code in selected period4transactionstxns
- P · Open-market buys · dominant4 · 100%
Activity by reported role
A joint filing can contribute to multiple rolesChief financial officer1
COO1
GC1
PRES1
SECY1
Reported Holdings After
Separated by insider, security, and ownership type
Ives Glen RCommon Stock · Direct
202,578Oct 01, 2026
Merriman AndrewCommon Stock · Direct
589,927Oct 01, 2026
Bell David TCommon Stock · Direct
18,651Oct 01, 2026
Martin Tammy LCommon Stock · Direct
16,427Oct 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Current transaction page only · each cell is a filing date · buys green, sells redSep 25 → Oct 25
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Castellum, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Castellum, Inc.?
MARTIN TAMMY L, Bell David T, Merriman Andrew, Ives Glen R.
When was the latest reported open-market purchase?
Martin Tammy L reported a buy on Oct 01, 2026 valued at $747. Read the SEC filing.
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?
Net open-market buying in the selected period was $3,151.26. This describes filed transactions, not a bullish rating.
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.