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Public ownership evidence

Larimar Therapeutics, Inc. Common Stock (LRMR) Ownership Disclosures

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

As of 2026-11-07T14:03:26.246Z

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2026-10-012026-09-29Harlow John B. Jr.A50,000Not reported

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

The displayed observation date is 2026-09-29 and its public availability date is 2026-10-01. Subtracting those calendar dates gives 2 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 A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

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.

SEC 0001193125-26-410719 ↗SEC 0001193125-26-410719 ↗13F 0001948780-26-000011 ↗

Recent Form 4 activity

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2026-10-012026-09-29Harlow John B. Jr.A50,000Not reported
2026-10-012026-09-29Harlow John B. Jr.A800,000Not 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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Corient Private Wealth LP2026-06-302026-08-2822,675$69,159None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25661$2,016None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,016$661,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2068,934$210,249None
Seven Fleet Capital Management LP2026-06-302026-08-18230,921$704,309None
Defilade Capital Management, L.P.2026-06-302026-08-153,670,135$11,193,912None
SummitTX Capital, L.P.2026-06-302026-08-15352,284$1,074,466None
Graham Capital Management, L.P.2026-06-302026-08-1512,407$37,841None
SEI INVESTMENTS CO2026-06-302026-08-1510,573$32,248None
Federation des caisses Desjardins du Quebec2026-06-302026-08-152,500$7,625None
JPL Wealth Management, LLC2026-06-302026-08-1515$46None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-15165,156$503,726None
ADAR1 Capital Management, LLC2026-06-302026-08-15272,745$831,872None
DIADEMA PARTNERS LP2026-06-302026-08-15146,637$447,243None
Velan Capital Investment Management LP2026-06-302026-08-1533,000$100,650None
XTX Topco Ltd2026-06-302026-08-1555,209$168,387None
Fi3 FINANCIAL ADVISORS, LLC2026-06-302026-08-152,915$1,263,896None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15206,969$631,255None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15206,969$631,255None
ExodusPoint Capital Management, LP2026-06-302026-08-1590,413$275,760None
Qube Research & Technologies Ltd2026-06-302026-08-151,641,042$5,005,178None
Caption Management, LLC2026-06-302026-08-15193,018$588,705None
OSAIC HOLDINGS, INC.2026-06-302026-08-151,211$3,693None
Squarepoint Ops LLC2026-06-302026-08-15113,474$346,096None
Man Group plc2026-06-302026-08-15113,049$344,799None
MetLife Investment Management, LLC2026-06-302026-08-1539,798$121,384None
Engineers Gate Manager LP2026-06-302026-08-1522,557$68,799None
JANE STREET GROUP, LLC2026-06-302026-08-1573,736$224,895None
JANE STREET GROUP, LLC2026-06-302026-08-1528,200$86,010Put
SPHERA FUNDS MANAGEMENT LTD.2026-06-302026-08-15926,004$2,824,312None
Legal & General Group Plc2026-06-302026-08-156,460$19,671None
RTW INVESTMENTS, LP2026-06-302026-08-152,565,999$7,826,297None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15269,500$821,975Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15518,300$1,580,815Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15144,428$440,505None
Hudson Bay Capital Management LP2026-06-302026-08-1511,000$33,550None
DAFNA Capital Management LLC2026-06-302026-08-152,008,164$6,124,900None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-151,333,037$4,065,763None
DEERFIELD MANAGEMENT COMPANY, L.P.2026-06-302026-08-1535,606,974$108,601,271None
Balyasny Asset Management L.P.2026-06-302026-08-1517,006$51,868None
Alyeska Investment Group, L.P.2026-06-302026-08-15617,211$1,882,494None
MAI Capital Management2026-06-302026-08-154,808$14,664None
MAI Capital Management2026-06-302026-08-155,671$17,297None
Cerity Partners LLC2026-06-302026-08-158,337$25,428None
Cerity Partners LLC2026-06-302026-08-15240,268$732,817None
Cerity Partners LLC2026-06-302026-08-1522,977$70,081None
Woodline Partners LP2026-06-302026-08-151,400,850$4,272,593None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-154,820$14,701None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1517$52None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1510,873$33,163None

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

Corient Private Wealth LP ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Seven Fleet Capital Management LP ↗Defilade Capital Management, L.P. ↗SummitTX Capital, L.P. ↗Graham Capital Management, L.P. ↗SEI INVESTMENTS CO ↗Federation des caisses Desjardins du Quebec ↗

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.

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.