Simon Mark 4

What Happened
Director Simon Mark made an open-market purchase of 11,061 shares of Cabaletta Bio (CABA) on January 21, 2026. The transaction was reported as a purchase (code P) with a weighted-average price of $2.28 per share, for a total cost of approximately $25,261. This filing does not state the insider’s motive; purchases are often viewed by investors as a more informative/positive signal than routine sales, but no conclusion about intent should be drawn.

Key Details

• Transaction date: 2026-01-21
• Transaction type: Open-market purchase (Code P)
• Shares acquired: 11,061
• Price: Weighted average $2.28 per share; actual prices ranged from $2.245 to $2.32 (see footnote)
• Total reported value: ~$25,261
• Shares owned after transaction: Not disclosed in this Form 4
• Footnote: The reported price is a weighted average; the purchaser can provide the exact breakdown of shares bought at each price within the $2.245–$2.32 range upon request (per filing)
• Timeliness: Filed for the transaction dated the same day (no late filing indicated)

Context

• This was a direct stock purchase (not an option exercise, award, or gift).
• Purchases by insiders can signal confidence, but filings do not explain motivation; consider alongside other filings and company news.