Calderon Nancy E. (CIK 1791477) reported 11 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2025-09-03). Recent activity: Buy NTIC (5 shares), Buy NTIC (11 shares), Buy NTIC (6 shares), Buy NTIC (14 shares), Buy NTIC (3 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 5 | $72 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 11 | $151 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 6 | $72 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 14 | $152 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 3 | $20 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 3 | $22 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 3 | $20 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 3 | $22 |
| 2025-09-03 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 6,739 | $0 |
| 2025-05-27 | BELDEN INC. (BDC) | Director | Buy | 1,385 | $0 |
| 2025-04-28 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) | Director | Buy | 1,000 | $7,450 |
Source: SEC Form 4 filings · as of 2025-09-03