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Disclosery

XFOR X4 PHARMACEUTICALS INC

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COMMON STOCK (common), issuer CIK 1501697

84 managers (88 13F filers) reported a position in XFOR shares at 2026-06-30, 95,923,522 shares in all. 32 filers opened a position and 26 filers sold out during the quarter.

Managers
84
13F filers
88
New
32
Added
24
Reduced
13
Sold out
26
Shares held by filers
95,923,522

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
MORGAN STANLEYin group MORGAN STANLEY9,461,279$44.2M<0.01%-5,71313F-HRTimelineGroup
FMR LLCin group FMR LLC8,321,657$38.9M<0.01%+218,25713F-HRTimelineGroup
Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In…7,967,454$37.2M2.21%013F-HRTimelineGroup
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC7,933,491$37M0.58%+1,195,84313F-HRTimelineGroup
Saturn V Capital Management LP6,973,343$32.6M4.67%+516,69713F-HRTimeline
Empery Asset Management, LP6,930,591$32.4M37.43%-2,013,52713F-HRTimeline
Deep Track Capital, LP5,878,757$27.5M0.4%-460,77813F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.5,554,906$25.9M<0.01%+4,343,11213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding4,863,002$22.7M+840,155Timeline
Kalehua Capital Management LLC3,722,840$17.4M9.99%013F-HR/ATimeline
Rosalind Advisors, Inc.3,214,766$15M5.64%013F-HRTimeline
BRAIDWELL LP2,922,754$13.6M0.5%-350,20013F-HRTimeline
Blackstone Inc.in group Blackstone Inc.2,681,922$12.5M0.04%013F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Trails Edge Capital Partners, LP2,571,478$12M1.91%013F-HRTimeline
Nantahala Capital Management, LLC2,449,468$11.4M0.69%013F-HR/ATimeline
BVF INC/ILin group BVF INC/IL2,233,742$10.4M0.27%013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,098,047$9.8M<0.01%+1,158,32113F-HRTimelineGroup
Venrock Adviser, LLC1,934,253$9.03M0.27%+1,603,72813F-HRTimeline
SAMSARA BIOCAPITAL, LLC1,395,587$6.52M0.54%-436,97913F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,296,017$6.05M<0.01%+892,48313F-HRTimelineGroup
Woodline Partners LP1,001,095$4.68M0.01%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC916,536$4.28M<0.01%+34,40213F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP652,849$3.05M<0.01%+474,61413F-HRTimelineGroup
Verdad Advisers, LP352,093$1.64M1.57%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co263,264$1.23M<0.01%+196,51513F-HRTimelineGroup
Stonepine Capital Management, LLC224,989$1.05M0.8%-110,32013F-HR/ATimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp196,340$917K<0.01%new13F-HRTimelineGroup
Affinity Asset Advisors, LLC145,000$677K0.03%013F-HRTimeline
Nuveen, LLCin group TIAA107,389$502K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding101,332$473K-857,489Timeline
Invesco Ltd.in group Invesco Ltd.96,772$452K<0.01%+76,80413F-HRTimelineGroup
ALPS ADVISORS INC95,726$447K<0.01%new13F-HRTimeline
RHUMBLINE ADVISERS95,081$444K<0.01%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\78,885$368K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP76,314$356K0.02%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC74,795$349K<0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC70,112$327K<0.01%+34,34713F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN67,712$316K<0.01%new13F-HRTimelineGroup
Palumbo Wealth Management LLC67,116$313K0.07%-63,89813F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC67,078$313K<0.01%new13F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/66,379$310K<0.01%new13F-HRTimeline
UBS Group AGin group UBS Group AG58,043$271K<0.01%-209,29713F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…51,800$242K<0.01%new13F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…47,969$224K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/46,861$219K<0.01%-103,81513F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.41,072$192K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…37,073$173K<0.01%new13F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC34,253$160K<0.01%+21,93613F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO33,552$142K<0.01%+33,51913F-HRTimelineGroup
Police & Firemen's Retirement System of…23,846$111K<0.01%new13F-HRTimeline
AXQ CAPITAL, LP22,880$107K0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …22,083$103K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC19,439$90.8K<0.01%+16,62513F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP19,426$90.7K<0.01%+5,55813F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP18,519$86.5K<0.01%-3,27013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC18,100$84.5K<0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC17,290$80.7K<0.01%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND16,500$77.1K<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS16,384$76.5K<0.01%+11,62813F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC15,838$74K<0.01%new13F-HRTimelineGroup
CAXTON CORP15,557$72.7K3.92%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
WINTON GROUP Ltdin group WINTON GROUP Ltd14,400$67.2K<0.01%+3,80013F-HRTimelineGroup
Creative Planningin group Creative Planning13,872$64.8K<0.01%+5313F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.14,580$60.2K<0.01%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC12,500$58.4K<0.01%new13F-HRTimelineGroup
ProShare Advisors LLC10,588$49.4K<0.01%new13F-HRTimeline
Indivisible Partners10,000$46.9K<0.01%013F-HRTimeline
Pettinga Financial Advisors LLC10,000$46.7K0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc7,858$36.7K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…7,745$36.2K<0.01%+7,56513F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…7,338$34.3K<0.01%new13F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…7,178$33.5K<0.01%+6,44913F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,559$12K<0.01%+2,44413F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,759$8.21K<0.01%013F-HRTimelineGroup
Sterling Capital Management LLC1,629$7.61K<0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,113$5.2K<0.01%new13F-HR/ATimeline
GROUP ONE TRADING LLC712$3.33K<0.01%013F-HRTimeline
Bleichroeder LP595$2.78K<0.01%013F-HRTimeline
Blue Trust, Inc.284$1.33K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…33$154<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP38$153<0.01%013F-HRTimelineGroup
Caitong International Asset Management …30$140<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.9$42<0.01%-4513F-HRTimeline
HighMark Wealth Management LLC6$28<0.01%013F-HRTimeline