CSP INC /MA/ (CSPI) insider trading
CSP INC /MA/ insiders have made 1 open-market purchase worth $36k since Sep 15, 2026, by 1 insider. The latest: Joseph R. Nerges (10% owner) bought $36k, filed Sep 15, 2026, scored 12 out of 100.
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Insider purchases
| Filed | Insider | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Sep 15 Form 4 (opens sec.gov) |
Joseph R. Nerges10% owner10% owner · Near 52-week low | +0% stake | 12 | $36k 4,600 at $7.84 |
−1.4% | −5.8% |
Track record (hypothetical): a week after the filing, these buys averaged −1.4% (0% up, 1 measured); a month after, −5.8% (0% up, 1 measured).
Insiders who bought CSPI
- Joseph R. Nerges 10% owner
Questions
Are insiders buying CSPI stock?
Yes. In the last 90 days, 1 open-market purchase was filed, worth $36k.
Who bought CSPI stock most recently?
Joseph R. Nerges, 10% owner, bought 4,600 shares for $36k (Form 4 (opens sec.gov), filed Sep 15, 2026).
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Insiders are also buying, same industry
Data as of Sep 15, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer