Summary
Updated Aug 30, 2026
June Ann Seymour is Chief Accounting Officer of Cartesian Therapeutics, Inc. (RNAC). 1 SEC Form 4 filing on record, dated 28 October 2025.
Trading Pattern
InsiderAlpha's records for June Ann Seymour go back to 2025: 1 primary Form 4 filing, an average of 0.5 per year. 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 have reported open-market trades at the same companies as June Ann Seymour. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Timothy A. Springer - $14.15M of RNAC open-market activity on record
- Metin Kurtoglu - $2.43M of RNAC open-market activity on record
- Milos Miljkovic - $908K of RNAC open-market activity on record
- Christopher M. Jewell - $875K of RNAC open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is June Ann Seymour?
June Ann Seymour is a corporate insider, tracked as Chief Accounting Officer of Cartesian Therapeutics, Inc. (RNAC). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did June Ann Seymour last file a Form 4?
The only primary Form 4 on record is dated 28 October 2025.
Where can I see all of June Ann Seymour'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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