Summary
Updated Aug 31, 2026
Katherine Bach Kalin is Director of SELLAS Life Sciences Group, Inc. (SLS). 1 SEC Form 4 filing on record, dated 21 November 2025. Most recent open-market trade: bought $101K of SLS on 21 November 2025. Lifetime open-market purchases: $101K.
Recent Transactions
1Every recent SEC Form 4 transaction Katherine Bach Kalin has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Katherine Bach Kalin go back to 2025: 1 primary Form 4 filing, an average of 0.5 per year. The typical open-market purchase is $101K (1 buy totaling $101K). The largest single buy on record is $101K of SLS in 2025. 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 Katherine Bach Kalin. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Nostrand Robert L. van - $15K of SLS 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 Katherine Bach Kalin?
Katherine Bach Kalin is a corporate insider, tracked as Director of SELLAS Life Sciences Group, Inc. (SLS). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Katherine Bach Kalin last file a Form 4?
The only primary Form 4 on record is dated 21 November 2025.
Has Katherine Bach Kalin been buying or selling stock?
Recorded transactions: 1 open-market purchase ($101K) and 0 open-market sales across all tracked filings.
Where can I see all of Katherine Bach Kalin'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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