CSP INC /MA/ Insider Trading Activity
Every SEC Form 4 insider transaction reported for CSP INC /MA/ (CSPI), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are CSPI insiders buying or selling?
In the last 12 months, CSP INC /MA/ insiders reported 9 open-market purchases ($321.4K) and 0 sales ($0) — net buying of $321.4K. Since September 2018, Trabud has recorded 83 Form 4 filings for CSPI: 69 buys ($3.8M) and 14 sells ($996.8K).
Source: SEC EDGAR Form 4
Key Statistics (September 2018 – Sep 15, 2026)
Total Form 4 filings
83
SEC EDGAR
Insider filers
9
Insider buys (69)
$3.8M
Insider sells (14)
$996.8K
Insider sentiment
Net buyingNet insider flow of $2.8M in net buying since September 2018, and $321.4K in net buying over the last 12 months. 1 insider buy in the last 90 days.
Recent CSPI insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Sep 15, 2026 | Joseph R Nerges | 10% Owner | Purchase | 4.6K | $7.84 | $36.1K | SEC ↗ |
| Jun 10, 2026 | Joseph R Nerges | 10% Owner | Purchase | 3.4K | $8.57 | $28.9K | SEC ↗ |
| May 18, 2026 | Anthony Folger | Director | Purchase | 2.5K | $9.36 | $23.4K | SEC ↗ |
| May 14, 2026 | Ismail Azeri | Director | Purchase | 2.5K | $9.38 | $23.5K | SEC ↗ |
| May 13, 2026 | Joseph R Nerges | 10% Owner | Purchase | 4.2K | $9.23 | $39.2K | SEC ↗ |
| May 13, 2026 | Stephen J. Webber | Director | Purchase | 2.5K | $9.48 | $23.7K | SEC ↗ |
| Mar 13, 2026 | Joseph R Nerges | 10% Owner | Purchase | 2.2K | $8.51 | $18.8K | SEC ↗ |
| Feb 26, 2026 | Joseph R Nerges | 10% Owner | Purchase | 3.0K | $8.79 | $26.4K | SEC ↗ |
| Feb 19, 2026 | Joseph R Nerges | 10% Owner | Purchase | 11.0K | $9.22 | $101.5K | SEC ↗ |
| Sep 16, 2025 | Joseph R Nerges | 10% Owner | Purchase | 2.2K | $11.21 | $24.7K | SEC ↗ |
| Jun 16, 2025 | Joseph R Nerges | 10% Owner | Purchase | 3.9K | $11.91 | $45.8K | SEC ↗ |
| Jun 6, 2025 | Joseph R Nerges | 10% Owner | Purchase | 2.0K | $13.86 | $27.7K | SEC ↗ |
| May 29, 2025 | Joseph R Nerges | 10% Owner | Purchase | 1.7K | $14.65 | $24.9K | SEC ↗ |
| Mar 11, 2025 | Joseph R Nerges | 10% Owner | Purchase | 2.0K | $15.52 | $31.0K | SEC ↗ |
| Feb 26, 2025 | Joseph R Nerges | 10% Owner | Purchase | 2.5K | $15.90 | $39.0K | SEC ↗ |
| Feb 14, 2025 | Joseph R Nerges | 10% Owner | Purchase | 3.0K | $19.37 | $58.1K | SEC ↗ |
| Aug 27, 2024 | Shelton C James | Director | Sale | 1.0K | $14.09 | $14.1K | SEC ↗ |
| Aug 23, 2024 | Shelton C James | Director | Sale | 2.0K | $14.25 | $28.5K | SEC ↗ |
| Aug 19, 2024 | Joseph R Nerges | 10% Owner | Purchase | 2.8K | $13.28 | $37.2K | SEC ↗ |
| Aug 1, 2024 | Joseph R Nerges | 10% Owner | Purchase | 3.0K | $14.57 | $43.8K | SEC ↗ |
| Jul 19, 2024 | Joseph R Nerges | 10% Owner | Purchase | 2.7K | $14.39 | $39.2K | SEC ↗ |
| Jun 27, 2024 | Joseph R Nerges | 10% Owner | Purchase | 1.7K | $13.52 | $23.1K | SEC ↗ |
| Jun 24, 2024 | Joseph R Nerges | 10% Owner | Purchase | 4.0K | $13.89 | $54.9K | SEC ↗ |
| Jun 18, 2024 | Joseph R Nerges | 10% Owner | Purchase | 5.3K | $13.97 | $73.5K | SEC ↗ |
| Jun 10, 2024 | Joseph R Nerges | 10% Owner | Purchase | 2.5K | $14.13 | $35.3K | SEC ↗ |
Showing the 25 most recent of 83 Form 4 filings for CSP INC /MA/.
Most active CSPI insiders
- Joseph R Nerges66 filings
- Shelton C James6 filings
- Victor Dellovo3 filings
- Gary W Levine2 filings
- Mike Newbanks2 filings
Ask anything about CSPI insider activity
Use Trabud's AI agent to query CSP INC /MA/'s Form 4 history in plain English — "Show me CSPI CEO purchases this year" or compare it against any other ticker.
Open the AI agentCSPI insider trading FAQ
Are CSP INC /MA/ insiders buying or selling?
In the last 12 months, CSP INC /MA/ insiders reported 9 open-market purchases ($321.4K) and 0 sales ($0) — net buying of $321.4K. Since September 2018, Trabud has recorded 83 Form 4 filings for CSPI: 69 buys ($3.8M) and 14 sells ($996.8K). Over the full record that is net buying of $2.8M.
How many insiders trade CSPI stock?
9 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for CSP INC /MA/. The most recent filing was accepted on Sep 15, 2026.
Where does Trabud get CSPI insider trading data?
All CSPI insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.