Summary
Updated Aug 31, 2026
Karen Ling is Director of iRhythm Holdings, Inc. (IRTC). 3 SEC Form 4 filings on record, most recently on 29 May 2026. Most recent open-market trade: bought $71K of BLCO on 23 February 2026. Lifetime open-market purchases: $71K.
Recent Transactions
4Every recent SEC Form 4 transaction Karen Ling has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Karen Ling go back to 2026: 3 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $71K (1 buy totaling $71K). The largest single buy on record is $71K of BLCO in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Karen Ling files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Quentin S. Blackford - $11.15M of IRTC open-market activity in the last 12 months
- Daniel G. Wilson - $3.80M of IRTC open-market activity in the last 12 months
- Chad Patterson - $3.05M of IRTC open-market activity in the last 12 months
- Patrick Michael Murphy - $2.96M of IRTC open-market activity in the last 12 months
- Minang Turakhia - $2.64M of IRTC open-market activity in the last 12 months
- Abhijit Y. Talwalkar - $2.38M of IRTC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Karen Ling?
Karen Ling is a corporate insider, tracked as Director of iRhythm Holdings, Inc. (IRTC). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Karen Ling last file a Form 4?
The most recent primary Form 4 on record is dated 29 May 2026, one of 3 filings going back to 2026.
Has Karen Ling been buying or selling stock?
Recorded transactions: 1 open-market purchase ($71K) and 0 open-market sales across all tracked filings.
Where can I see all of Karen Ling's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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