X4 PHARMACEUTICALS, INC. - Common Stock, par value $0.001 per share (XFOR)

Q: What does CUSIP 98420X103 represent in this 13F holders report?

CUSIP 98420X103 is the security identifier for XFOR - X4 PHARMACEUTICALS, INC. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

Q: How many institutions held XFOR - X4 PHARMACEUTICALS, INC. - Common Stock, par value $0.001 per share in Q2 2023?

96 institutional investors reported XFOR - X4 PHARMACEUTICALS, INC. - Common Stock, par value $0.001 per share for Q2 2023. Use the holders table for investor-level position and value details.

CUSIP: 98420X103

Q2 2023 13F Holders as of 30 Jun 2023

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 112,930,152
Total 13F value: $219,074,939
Share change: +51,913,156
Put/Call ratio: 7.1%
SEC-reported price per share: $1.94
Number of holders: 96
Value change: +$103,525,068
Number of buys: 70
Number of sells: 17
Shares outstanding: 94,372,096

Security key

98420X103

Report period

Q2 2023

Institutions

Top holders

XFOR full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 X4 Pharmaceuticals, Inc SEC filings X4 Pharmaceuticals, Inc company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 98420X103

Newer quarter: Q3 2025

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of XFOR - X4 PHARMACEUTICALS, INC. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Bain Capital Life Science...

Disclosed value leader

Bain Capital Life Science...

Comparable rows

15/15

Latest evidence

31 Mar 2023

13F Lead comparable stake: 13% Showing 1-6 of 15 holder rows.

Quick read

Bain Capital Life Sciences Investors, LLC leads the comparable SEC ownership view at 13%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Bain Capital Life Sciences Investors, LLC's linked filing trail.

Comparable ownership Top 5

Bain Capital Life Sciences Invest... 13%

NEA Management Company, LLC 12%

ORBIMED ADVISORS LLC 6.2%

PERCEPTIVE ADVISORS LLC 4.8%

AXA S.A. 4.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Bain Capital Life Sciences Investors, LLC	13F Company 13F	13%	$10,616,000 12,202,510 shares	—	31 Mar 2023
NEA Management Company, LLC	13F Company 13F	12%	$10,211,010 11,736,793 shares	—	31 Mar 2023
ORBIMED ADVISORS LLC	13F Company 13F	6.2%	$5,061,422 5,817,726 shares	—	31 Mar 2023
PERCEPTIVE ADVISORS LLC	13F Company 13F	4.8%	$3,954,545 4,545,454 shares	—	31 Mar 2023
AXA S.A.	13F Company 13F	4.7%	$3,824,927 4,396,468 shares	—	31 Mar 2023
VANGUARD GROUP INC	13F Company 13F	4.6%	$3,779,551 4,344,311 shares	—	31 Mar 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

112,930,152

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2023 vs Q4 2025 Across Filers

Q4 2025 holders

Q2 2023 holders

Holder diff

Investor	Q4 2025 Shares	Q2 2023 Shares	Share Diff	Share Chg %	Q4 2025 value	Q2 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend