JATT SCHEDULE 13G/A: SEC filing
Filed with the SEC on · accession 0001831942-26-000039
JATT filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 14, 2026. Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of an amended Schedule 13G regarding their passive ownership stake in JATT II Acquisition Corp. The filing indicates no change in ownership intent and is a routine… The stock moved +7.0% by the first close after the filing.
Summary of the filing
Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of an amended Schedule 13G regarding their passive ownership stake in JATT II Acquisition Corp. The filing indicates no change in ownership intent and is a routine administrative update.
Key details
How JATT stock reacted
Close before
$12.50
Aug 13, 2026
First close after
+7.04%
$13.38
5 trading days
+5.92%
$13.24
Since filing
-17.28%
$10.34
✦ Ask GOAX AI about this filing — what it means for JATT, what changed since its last filings and what to watch next.
Try it free for 7 days🔔 Want to stay updated on new SEC filings for JATT?
Click hereFrequently asked questions
What did JATT file with the SEC on Aug 14, 2026?
JATT filed a SCHEDULE 13G/A (SEC filing). Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of an amended Schedule 13G regarding their passive ownership stake in JATT II Acquisition Corp. The filing indicates no change in ownership intent and is a routine administrative update.
How do I read a SCHEDULE 13G/A?
A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).
How did JATT stock react to this filing?
JATT closed at $12.50 before the filing and $13.38 on Aug 17, 2026 (+7.04%). Five trading days later: $13.24 (+5.92%).
Other JATT SEC filings
Get alerts when JATT files with the SEC, plus live charts, key levels and news for 13,000+ stocks.
Try SEPT free for 7 days