Public ownership evidence

Cabaletta Bio, Inc. Common Stock (CABA) Ownership Disclosures

Read CABA insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

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Step 1 of 3

Recent institutional filing receipts

Cabaletta Bio, Inc. Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Manager
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
Report period
2026-06-30
Available
2026-08-25
Reported shares
1,550
Value (USD)
$4,821
Option
None
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

13F 0001081019-26-000020
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read CABA fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read CABA fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

No matching purchases, sales or awards were returned in this 90-day public filing window.

No records are available for this view.

90-day public availability window, up to 50 records.

Recent institutional filing receipts

See the complete recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-251,550$4,821None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-254,821$1,550,000None
CANTOR FITZGERALD, L. P.2026-06-302026-08-20800,001$2,488,003None
Ensign Peak Advisors, Inc2025-12-312026-08-19550,000$1,204,500None
Almitas Capital LLC2026-06-302026-08-18125,900$391,549None
Stonepine Capital Management, LLC2026-06-302026-08-18917,100$2,852,181None
Graham Capital Management, L.P.2026-06-302026-08-1581,279$252,778None
Federation des caisses Desjardins du Quebec2026-06-302026-08-15340$1,057None
Rafferty Asset Management, LLC2026-06-302026-08-15146,107$454,393None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-15383,294$1,192,044None
Quarry LP2026-06-302026-08-1591$283None
ADAR1 Capital Management, LLC2026-06-302026-08-1550,000$155,500None
SUPERSTRING CAPITAL MANAGEMENT LP2026-06-302026-08-151,278,652$3,478,020None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-1518,869,907$58,686,000None
XTX Topco Ltd2026-06-302026-08-1545,702$142,133None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15374,886$1,165,895None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15374,886$1,165,895None
Qube Research & Technologies Ltd2026-06-302026-08-151,426,840$4,437,472None
Diametric Capital, LP2026-06-302026-08-15135,598$421,709None
Caption Management, LLC2026-06-302026-08-15599,500$1,864,445Call
OSAIC HOLDINGS, INC.2026-06-302026-08-152,907$9,041None
MetLife Investment Management, LLC2026-06-302026-08-1566,749$207,589None
JANE STREET GROUP, LLC2026-06-302026-08-1561,400$190,954Put
JANE STREET GROUP, LLC2026-06-302026-08-15431,400$1,341,654Call
Cormorant Asset Management, LP2026-06-302026-08-155,000,000$15,550,000None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15182,455$567,435None
SPHERA FUNDS MANAGEMENT LTD.2026-06-302026-08-151,329,012$4,133,227None
Legal & General Group Plc2026-06-302026-08-1510,918$34,010None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-152,820,500$8,771,755Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1545,800$142,438Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1563,228$196,639None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-15152,964$475,718None
Stonepine Capital Management, LLC2026-06-302026-08-15917,100$2,852,181None
Ikarian Capital, LLC2026-06-302026-08-15700,000$2,177,000None
Opaleye Management Inc.2026-06-302026-08-153,863,800$12,016,418None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-152,068,491$6,433,007None
&PARTNERS2026-06-302026-08-1516,200$50,382None
FRED ALGER MANAGEMENT, LLC2026-06-302026-08-1514,033$43,643None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-153,997$12,151None
AMERIPRISE FINANCIAL INC2026-06-302026-08-151,000$3,110None
AMERIPRISE FINANCIAL INC2026-06-302026-08-15827,145$2,572,421None
Bain Capital Life Sciences Investors, LLC2026-06-302026-08-1517,241,445$53,620,894None
Woodline Partners LP2026-06-302026-08-154,200,142$13,062,442None
ADAGE CAPITAL PARTNERS GP, L.L.C.2026-06-302026-08-159,174,758$28,533,497None
MANUFACTURERS LIFE INSURANCE COMPANY, THE2026-06-302026-08-15182,055$566,191None
ROYAL BANK OF CANADA2026-06-302026-08-153,583$11,000None
ALLIANCEBERNSTEIN L.P.2026-06-302026-08-15108,410$291,623None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-15267,372$831,527None
D. E. Shaw & Co., Inc.2026-06-302026-08-1590,652$281,928None
CITADEL ADVISORS LLC2026-06-302026-08-15119,000$370,090Put

90-day public filing window, up to 50 source positions.

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CANTOR FITZGERALD, L. P. ↗Ensign Peak Advisors, Inc ↗Almitas Capital LLC ↗Stonepine Capital Management, LLC ↗Graham Capital Management, L.P. ↗Federation des caisses Desjardins du Quebec ↗Rafferty Asset Management, LLC ↗Susquehanna Portfolio Strategies, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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