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CSPI · CSP INC /MA/

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys5
Open-market sells0
Total purchased$28,178
Unique insiders buying1
Avg price paid$7.83
Research cases0
Last filing2026-09-15

Average price paid is weighted by shares, so a large purchase counts for more than a small one. It is what insiders reported paying, not a target or a fair value.

Insider flow: Buying only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-09-11 — NERGES JOSEPH R · bought 1,000 @ $7.85 2026-09-11 — NERGES JOSEPH R · bought 1,600 @ $7.75 2026-09-14 — NERGES JOSEPH R · bought 500 @ $7.90 2026-09-15 — NERGES JOSEPH R · bought 28 @ $7.90 2026-09-15 — NERGES JOSEPH R · bought 472 @ $7.96
2026-09-112026-09-15

Insider cost basis

Share-weighted average price across 5 reported purchases, with the full range of prices paid. Purchases only — averaging a sale into an "insider cost" would describe a price nobody paid.

$7.75 $7.96
$7.83 weighted average insider purchase price

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

NERGES JOSEPH R 10% owner
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $CSPI is the reading of them — and for this company, that is what the list below says it is, no more.

  • Insider cost basisShare-weighted average price paid across the 5 reported purchases, with the full range, against the current price.
  • Insider participationWho bought, how often, and how the buying is distributed across the people filing — one person repeating is not several agreeing.
  • Transaction timelineThe [{'transaction_date': '2026-09-15', 'insider_name': 'NERGES JOSEPH R', 'insider_title': '10% owner', 'transaction_type': 'Open-market buy', 'shares': 28.0, 'price': 7.9, 'value': 221.2, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'NERGES JOSEPH R', 'insider_title': '10% owner', 'transaction_type': 'Open-market buy', 'shares': 472.0, 'price': 7.96, 'value': 3757.12, 'is_buy': True}, {'transaction_date': '2026-09-14', 'insider_name': 'NERGES JOSEPH R', 'insider_title': '10% owner', 'transaction_type': 'Open-market buy', 'shares': 500.0, 'price': 7.9, 'value': 3950.0, 'is_buy': True}, {'transaction_date': '2026-09-11', 'insider_name': 'NERGES JOSEPH R', 'insider_title': '10% owner', 'transaction_type': 'Open-market buy', 'shares': 1000.0, 'price': 7.85, 'value': 7850.0, 'is_buy': True}, {'transaction_date': '2026-09-11', 'insider_name': 'NERGES JOSEPH R', 'insider_title': '10% owner', 'transaction_type': 'Open-market buy', 'shares': 1600.0, 'price': 7.75, 'value': 12400.0, 'is_buy': True}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for CSPI today: no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

A free account opens all of it.

Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.