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Public ownership evidence

Q32 Bio Inc. Common Stock (QTTB) Ownership Disclosures

Read QTTB 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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2026-08-282026-08-25Kalowski LeeS3,972Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-08-25 and its public availability date is 2026-08-28. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent Form 4 activity

Inspect all 14 displayed rows: Recent Form 4 activity

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2026-08-282026-08-25Kalowski LeeS3,972Not reported
2026-08-282026-08-25Morrison Jodie PopeS9,845Not reported
2026-08-282026-08-25Violette Shelia M.S2,798Not reported
2026-07-222026-06-12TZIANABOS ARTHURA10,826Not reported
2026-07-222026-06-12Lundberg Sven AnteA10,826Not reported
2026-07-222026-06-12LAPORTE KATHLEENA10,826Not reported
2026-07-222026-06-12Iwicki Mark TA10,826Not reported
2026-07-222026-06-12Xu DiyongA10,826Not reported
2026-07-222026-06-12Manke IsaacA10,826Not reported
2026-07-222026-06-12GRAYZEL DAVID S.A10,826Not reported
2026-07-222026-06-12Thistle MaryA10,826Not reported
2026-07-212026-07-16Violette Shelia M.A37,500Not reported
2026-07-212026-07-16Morrison Jodie PopeA132,000Not reported
2026-07-212026-07-16Kalowski LeeA53,250Not reported

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

Recent institutional filing receipts

Inspect all 50 displayed rows: 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.

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SummitTX Capital, L.P.2026-06-302026-08-15733,774$9,348,281None
Federation des caisses Desjardins du Quebec2026-06-302026-08-1532$404None
Federation des caisses Desjardins du Quebec2026-06-302026-08-1538$484None
MONIMUS CAPITAL MANAGEMENT, LP2026-06-302026-08-15132,036$1,682,139None
XTX Topco Ltd2026-06-302026-08-1510,874$138,535None
ExodusPoint Capital Management, LP2026-06-302026-08-1511,336$144,421None
OSAIC HOLDINGS, INC.2026-06-302026-08-15124$1,579None
Squarepoint Ops LLC2026-06-302026-08-1523,790$303,085None
ACORN CAPITAL ADVISORS, LLC2026-06-302026-08-15216,171$2,754,019None
JANE STREET GROUP, LLC2026-06-302026-08-1530,395$387,232None
JANE STREET GROUP, LLC2026-06-302026-08-15132,352$1,686,164None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-1561,300$780,962Put
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15130,427$1,661,640None
HRT FINANCIAL LP2026-06-302026-08-1515,949$203,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1523,342$297,377None
Ikarian Capital, LLC2026-06-302026-08-15200,000$2,548,000Put
Ikarian Capital, LLC2026-06-302026-08-15430,000$5,478,200None
Opaleye Management Inc.2026-06-302026-08-15931,000$11,860,940None
DAFNA Capital Management LLC2026-06-302026-08-1532,896$419,095None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1510,928$139,223None
Boxer Capital Management, LLC2026-06-302026-08-153,149,310$40,122,209None
Balyasny Asset Management L.P.2026-06-302026-08-1512,342$157,237None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-15500$6,585None
ORBIMED ADVISORS LLC2026-06-302026-08-154,127,987$52,590,554None
MANGROVE PARTNERS IM, LLC2026-06-302026-08-1522,150$282,191None
Woodline Partners LP2026-06-302026-08-15286,212$3,646,341None
Logos Global Management LP2026-06-302026-08-15800,000$10,192,000None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1534,613$440,970None
RA CAPITAL MANAGEMENT, L.P.2026-06-302026-08-152,332,457$29,715,502None
CITADEL ADVISORS LLC2026-06-302026-08-15120,663$1,537,247None
GROUP ONE TRADING LLC2026-06-302026-08-1534$433None
BVF INC/IL2026-06-302026-08-152,350,000$29,939,000None
Point72 Asset Management, L.P.2026-06-302026-08-151,173,396$14,949,065None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-1549,582$631,675None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-14518,803$6,609,550None
Vanguard Global Advisers, LLC2026-06-302026-08-144,824$61,458None
Rockefeller Capital Management L.P.2026-06-302026-08-14577$7,351None
UBS Group AG2026-06-302026-08-14100$1,274None
UBS Group AG2026-06-302026-08-14489$6,230None
UBS Group AG2026-06-302026-08-1414,419$183,698None
MARSHALL WACE, LLP2026-06-302026-08-1467,045$854,153None
BNP PARIBAS FINANCIAL MARKETS2026-06-302026-08-14303$3,860None
ACADIAN ASSET MANAGEMENT LLC2026-06-302026-08-14218,234$2,779,000None
Atlas Venture Life Science Advisors, LLC2026-06-302026-08-142,717,106$34,615,930None
RENAISSANCE TECHNOLOGIES LLC2026-06-302026-08-14179,600$2,288,104None
Affinity Asset Advisors, LLC2026-06-302026-08-1427,777$353,879None
VANGUARD FIDUCIARY TRUST CO2026-06-302026-08-1466,217$843,605None
MORGAN STANLEY2026-06-302026-08-14516$6,574None
MORGAN STANLEY2026-06-302026-08-141$22None
MORGAN STANLEY2026-06-302026-08-141$13None

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

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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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.

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.