CALC Insider Transactions
198 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.
CALC insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|---|---|---|---|---|
| Middleton Fred A | Director,TenPercentOwner | 2026-06-25 | Purchase | 248,972.0 | $0.8 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-09-18 | Purchase | 2,500.0 | $3.07 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-09-15 | Purchase | 3,400.0 | $2.68 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-09-12 | Purchase | 5,000.0 | $3.12 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-09-09 | Purchase | 2,343.0 | $3.15 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-29 | Purchase | 800.0 | $2.74 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-28 | Purchase | 9,200.0 | $2.86 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-21 | Purchase | 3,508.0 | $2.79 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-20 | Purchase | 2,000.0 | $2.72 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-19 | Purchase | 1,000.0 | $2.79 |
| Hebbar Sudarshan | Chief Medical Officer | 2025-08-19 | Purchase | 9,563.0 | $2.82 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-08-15 | Purchase | 5,076.0 | $2.9 |
| Hebbar Sudarshan | Chief Medical Officer | 2025-08-15 | Purchase | 4,392.0 | $2.79 |
| Hebbar Sudarshan | Chief Medical Officer | 2025-08-14 | Purchase | 1,584.0 | $2.59 |
| Stauderman Kenneth A. | Chief Scientific Officer | 2025-07-28 | Purchase | 1,000.0 | $3.96 |
| Stauderman Kenneth A. | Chief Scientific Officer | 2025-07-25 | Sale | 1,000.0 | $3.65 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-07-22 | Purchase | 1,500.0 | $3.78 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-07-21 | Purchase | 1,500.0 | $3.37 |
| Leheny A. Rachel | CHIEF EXECUTIVE OFFICER | 2025-07-21 | Purchase | 1,000.0 | $3.4 |
| WILSON ROBERT N | Director | 2025-07-18 | Purchase | 4,500.0 | $2.87 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-07-18 | Purchase | 2,000.0 | $2.88 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-07-14 | Purchase | 6,500.0 | $2.43 |
| Leheny A. Rachel | CHIEF EXECUTIVE OFFICER | 2025-07-14 | Purchase | 2,500.0 | $2.47 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-07-09 | Purchase | 5,000.0 | $1.6 |
| Stauderman Kenneth A. | Chief Scientific Officer | 2025-07-01 | Purchase | 1,000.0 | $1.85 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-06-26 | Purchase | 4,500.0 | $1.44 |
| Bardin Stephen | Chief Financial Officer | 2025-06-26 | Purchase | 2,000.0 | $1.5 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-06-11 | Purchase | 5,000.0 | $1.85 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-06-06 | Purchase | 5,000.0 | $1.78 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2025-06-05 | Purchase | 5,100.0 | $1.7 |
| Bardin Stephen | Chief Financial Officer | 2025-05-30 | Purchase | 1,000.0 | $1.69 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-12-06 | Purchase | 4,800.0 | $2.65 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling VI Limited Partnership | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling VI Beteiligungs GmbH & Co KG | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Ventures VII (Canada), L.P. | TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling VI Limited Partnership | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling VI Beteiligungs GmbH & Co KG | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| Sanderling Ventures VII (Canada), L.P. | TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-11-01 | Purchase | 877.0 | $3.75 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-11-01 | Purchase | 86,867.0 | $3.75 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-11-01 | Purchase | 20,000.0 | $3.75 |
| Leheny A. Rachel | CHIEF EXECUTIVE OFFICER | 2024-11-01 | Purchase | 20,000.0 | $3.75 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-11-01 | Purchase | 53,333.0 | $3.75 |
| WILSON ROBERT N | Director | 2024-11-01 | Purchase | 53,333.0 | $3.75 |
| Leheny A. Rachel | CHIEF EXECUTIVE OFFICER | 2024-08-27 | Purchase | 1,000.0 | $4.19 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-08-23 | Purchase | 3,000.0 | $3.57 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-08-23 | Purchase | 2,000.0 | $3.58 |
| WILSON ROBERT N | Director | 2024-08-23 | Purchase | 54,000.0 | $3.72 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-08-21 | Purchase | 5,000.0 | $4.04 |
| WILSON ROBERT N | Director | 2024-06-28 | Purchase | 51,278.0 | $3.52 |
| WILSON ROBERT N | Director | 2024-06-27 | Purchase | 8,443.0 | $3.23 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-06-27 | Purchase | 5,000.0 | $3.22 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-04-02 | Purchase | 3,254.0 | $3.9 |
| Roberts Eric W | CHIEF BUSINESS OFFICER | 2024-04-01 | Purchase | 746.0 | $3.9 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 194,472.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 144,676.0 | $3.7 |
| MIDDLETON FRED A | Director,TenPercentOwner | 2024-01-23 | Purchase | 243,356.0 | $3.7 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Ventures VII (Canada), L.P. | TenPercentOwner | 2024-01-23 | Purchase | 28,744.0 | $3.7 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Ventures VII (Canada), L.P. | TenPercentOwner | 2024-01-23 | Purchase | 3,920.0 | $3.7 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Ventures VII (Canada), L.P. | TenPercentOwner | 2024-01-23 | Purchase | 13,184.0 | $3.7 |
| Sanderling Venture Partners VI Co Investment Fund LP | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| Sanderling Venture Partners VI LP | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| Sanderling Ventures Management VI | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| Sanderling Ventures VII, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| Sanderling Ventures VII Annex Fund, L.P. | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |
| Sanderling Ventures Management VII | TenPercentOwner | 2024-01-23 | Purchase | 51,032.0 | $3.7 |