DOSSIER · 13F Holders · Q1 2026
CTLEUR

LUMEN TECHNOLOGIES INC COM

2 institutions still hold LUMEN TECHNOLOGIES INC COM as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 156700106·2 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$89M
visible holders
Holders
2
filers reporting
Concentration
98.26%
Front Street Capital Management, Inc. #1
top holder share
AI Holders Summary · Q1 2026

2 institutions reported CTLEUR in Q1 2026. Front Street Capital Management, Inc. leads at 98.3% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Front Street Capital Management, Inc.
CIK 0001683182
$88M12.6M11.61%Q1 2026
02
Kentucky Retirement Systems
CIK 0001537783
$2M49K0.11%Q1 2026