Employer with a benefit plan ยท SEC filer
X4 PHARMACEUTICALS INC.
Also filed as Arsanis, Inc.
61 N BEACON ST 4TH FLOOR, BOSTON, MA 02134
EIN
27-3181608
SEC CIK
0001501697
SEC · 2026-08-14
Industry (SIC)
Biological Products, (No Diagnostic Substances) (2836)
SEC · 2026-08-14
State of incorporation
DE
SEC · 2026-08-14
Ticker
XFOR
SEC · 2026-08-14
Latest SEC filing
SCHEDULE 13G/A 2026-08-14
SEC · 2026-08-14
Benefit plan 1, 2024 filing
X4 PHARMACEUTICALS INC. 401(K) PLAN
DOL · 2025-08-01
Participants (start of year)
112
DOL · 2025-08-01
Plan assets (end of year)
$12,501,376
DOL · 2025-08-01
Plan features
code 2E2F2G2J2K2T3D
DOL · 2025-08-01
Plan type
Multiemployer plan
DOL · 2025-08-01
Business code (NAICS)
325410
DOL · 2025-08-01
Benefit plan 1, 2023 filing
X4 PHARMACEUTICALS INC. 401(K) PLAN
DOL · 2024-07-16
Participants (start of year)
95
DOL · 2024-07-16
Plan assets (end of year)
$7,048,102
DOL · 2024-07-16