CGEM · smart money activity

Who's buying Cullinan Therapeutics, Inc.?

Perceptive Advisors: new position: 426.5K sh (~$7.8M, 0.1% of book); RTW Investments: added +39% to 2.36M sh (~$43.1M, 0.4% of book).

Smart money score40#85 of 372 stocks

Latest filingAug 14, 2026

Independent buyers2

Signal sources13F

Signals against1

CGEM insider buying, 13F and 13D filings

Aug 14, 2026New 13F stake

Perceptive Advisors: New position: 426.5K sh (~$7.8M, 0.1% of book)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗
Aug 14, 2026Selling

Deerfield Management: Sold entire position (~$5.5M last quarter)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗

1 more signal on CGEM is in Pro, with alerts when the next one is filed.

Try Pro free for 7 days

Signals come from SEC filings: Form 4 (insiders, filed within 2 business days), 13F (fund holdings, up to 45 days after quarter end) and Schedule 13D (5%+ activist stakes). This page reports what the filings show; it is not investment advice.