5 insiders bought CALC within a short window (2025-05-30→2025-07-28), $107k in total — cluster score 78/100. Members see the buyers, the score breakdown and the chart.
See the cluster| Filed | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| 2026-06-29 | Middleton Fred A Director · 10% owner | Bought | 248,972 | $0.80 | $199k |
| 2025-09-22 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 2,500 | $3.07 | $8k |
| 2025-09-17 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 3,400 | $2.68 | $9k |
| 2025-09-15 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 5,000 | $3.12 | $16k |
| 2025-09-11 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 2,343 | $3.15 | $7k |
| 2025-09-02 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 10,000 | $2.85 | $29k |
| 2025-08-25 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 3,508 | $2.79 | $10k |
| 2025-08-21 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 3,000 | $2.74 | $8k |
| 2025-08-21 | Hebbar Sudarshan Chief Medical Officer | Bought | 9,563 | $2.82 | $27k |
| 2025-08-19 | Roberts Eric W CHIEF BUSINESS OFFICER | Bought | 5,076 | $2.90 | $15k |
| 2025-08-18 | Hebbar Sudarshan Chief Medical Officer | Bought | 5,976 | $2.74 | $16k |
| 2025-07-29 | Stauderman Kenneth A.cluster Chief Scientific Officer | Bought | 1,000 | $3.96 | $4k |
| 2025-07-23 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 1,500 | $3.78 | $6k |
| 2025-07-22 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 1,500 | $3.37 | $5k |
| 2025-07-21 | Leheny A. Rachelcluster CHIEF EXECUTIVE OFFICER | Bought | 1,000 | $3.40 | $3k |
| 2025-07-18 | WILSON ROBERT Ncluster Director | Bought | 4,500 | $2.87 | $13k |
| 2025-07-18 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 2,000 | $2.88 | $6k |
| 2025-07-16 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 6,500 | $2.43 | $16k |
| 2025-07-15 | Leheny A. Rachelcluster CHIEF EXECUTIVE OFFICER | Bought | 2,500 | $2.47 | $6k |
| 2025-07-10 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 5,000 | $1.60 | $8k |
| 2025-07-02 | Stauderman Kenneth A.cluster Chief Scientific Officer | Bought | 1,000 | $1.85 | $2k |
| 2025-06-27 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 4,500 | $1.44 | $6k |
| 2025-06-26 | Bardin Stephencluster Chief Financial Officer | Bought | 2,000 | $1.50 | $3k |
| 2025-06-13 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 5,000 | $1.85 | $9k |
| 2025-06-09 | Roberts Eric Wcluster CHIEF BUSINESS OFFICER | Bought | 10,100 | $1.74 | $18k |
Showing the 25 most recent of 33 filings for CALC in the last two years. The full history, the price chart with every buy and sell marked, and daily updates are in the members browser.
| Insider | Role | Buys | Total bought |
|---|---|---|---|
| MIDDLETON FRED A | Director · 10% owner | 2 | $417k |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 18 | $383k |
| Sanderling VI Beteiligungs GmbH & Co KG | 10% owner | 1 | $329k |
| WILSON ROBERT N | Director | 2 | $213k |
| Middleton Fred A | Director · 10% owner | 1 | $199k |
| Leheny A. Rachel | CHIEF EXECUTIVE OFFICER | 3 | $85k |
Every insider buy and sell for CALC plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.
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