// company-profile
Cardio Diagnostics Holdings, Inc.
CDIOExchangeNasdaqSectorIn Vitro & In Vivo Diagnostic SubstancesInc.DEFilings85Insiders13
// api This Cardio Diagnostics Holdings, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Cardio Diagnostics Holdings, Inc. insiders bought $25K across 4 transactions with no open-market sales.
- Most active insider: Betts Wendy J with 1 transaction totaling $6K.
- Largest single purchase: $6K by Betts Wendy J on Mar 31, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Cardio Diagnostics Holdings, Inc. as of 2026-03-31
Total reported AUM
$409,444
QoQ change
+60.8%
Reporting period
2026-03-31
#1
JANE STREET GROUP, LLC
CIK 1595888
$143,167
73K shares
#2
BlackRock, Inc.
CIK 2012383
$67,681
35K shares
#3
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
$52,341
27K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Mar 31, 2026 | Betts Wendy J | CDIO | Award | 3,205 | $1.95 | $6K |
| Mar 31, 2026 | Fung Peter K | CDIO | Award | 3,205 | $1.95 | $6K |
| Mar 31, 2026 | Burton Paul Frederick | CDIO | Award | 3,205 | $1.95 | $6K |
| Mar 31, 2026 | Intrater James | CDIO | Award | 3,205 | $1.95 | $6K |
| Dec 31, 2025 | Betts Wendy J | CDIO | Award | 2,306 | $2.71 | $6K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Popular companies on Form4API
Browse insider trading activity for other actively-filed companies.