Company filings profile · CIK 0001870144
Cardio Diagnostics Holdings, Inc. — SEC filings & insider activity.
Real, source-linked SEC EDGAR activity for Cardio Diagnostics Holdings, Inc. (CDIO): 12 filings in the last 90 days vs 5 in the prior 90 (filing-velocity rising ↑ · 2.4×). Latest material 8-K events, insider Form-4 transactions, and periodic reports — monitored for change.
✔ Verified against the public SEC EDGAR filing record as of Sep 19, 2026. Source-linked, daily-refreshed.
Material 8-K events — Cardio Diagnostics Holdings, Inc.
8-K disclosures decoded by item code (the material events: agreements, results, control/management changes, impairments, restatements).
| Filed | Event | |
|---|---|---|
| Sep 18, 2026 | Item 5.07; Financial Statements and Exhibits | ↗ |
| Aug 20, 2026 | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Feb 19, 2026 | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Oct 15, 2025 | Item 5.07; Financial Statements and Exhibits | ↗ |
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Insider transactions (Form 4 / 3 / 5)
Recent filings
| Filed | Form | Detail | |
|---|---|---|---|
| Sep 18, 2026 | 8-K | Item 5.07; Financial Statements and Exhibits | ↗ |
| Sep 8, 2026 | DEFA14A | DEFINITIVE 14A ADDITIONAL MATERIALS | ↗ |
| Aug 20, 2026 | 8-K | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Aug 7, 2026 | 10-Q | QUARTERLY REPORT | ↗ |
| Aug 7, 2026 | DEFA14A | DEFINITIVE 14A ADDITIONAL MATERIALS | ↗ |
| Aug 5, 2026 | DEF 14A | DEFINITIVE 14A | ↗ |
| Jul 23, 2026 | ARS | ANNUAL REPORT TO SECURITY HOLDERS | ↗ |
| Jul 13, 2026 | PRE 14A | PRELIMINARY 14A | ↗ |
| Jul 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jul 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jul 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jul 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| May 15, 2026 | 10-Q | QUARTERLY REPORT | ↗ |
| Apr 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Apr 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Apr 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Apr 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Mar 13, 2026 | 10-K | ANNUAL REPORT | ↗ |
| Feb 19, 2026 | 8-K | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Jan 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jan 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jan 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jan 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Nov 12, 2025 | 10-Q | FORM 10-Q | ↗ |
| Oct 15, 2025 | 8-K | Item 5.07; Financial Statements and Exhibits | ↗ |
| Oct 3, 2025 | 4 | PRIMARY DOCUMENT | ↗ |
| Oct 3, 2025 | 4 | PRIMARY DOCUMENT | ↗ |
| Oct 3, 2025 | 4 | PRIMARY DOCUMENT | ↗ |
| Oct 3, 2025 | 4 | PRIMARY DOCUMENT | ↗ |
| Sep 23, 2025 | 424B3 | PROSPECTUS | ↗ |
| Sep 19, 2025 | EFFECT | Item ; Item ; Item | ↗ |
| Sep 16, 2025 | POS AM | POST-EFFECTIVE AMENDMENT NO. 1 | ↗ |
| Sep 12, 2025 | 424B3 | FINAL PROSPECTUS | ↗ |
| Sep 9, 2025 | EFFECT | Item ; Item ; Item | ↗ |
| Sep 5, 2025 | POS AM | POST-EFFECTIVE AMENDMENT NO. 3 | ↗ |
| Sep 4, 2025 | DEFA14A | DEFINITIVE 14A ADDITIONAL MATERIALS | ↗ |
| Sep 4, 2025 | DEF 14A | DEFINITIVE 14A | ↗ |
| Aug 27, 2025 | ARS | ANNUAL REPORT TO SECURITY HOLDERS | ↗ |
| Aug 14, 2025 | 10-Q | FORM 10-Q | ↗ |
| Aug 13, 2025 | PRE 14A | PRELIMINARY 14A | ↗ |