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HEARTLAND ADVISORS INC

Position in BCHT — Birchtech Corp.

CIK 937394 MILWAUKEE, WI

Position in BCHT

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$2,050,000
+$150,000 QoQ
Shares Held
1,000,000
0.0% QoQ
Ownership
3.80%
of shares outstanding
% of Portfolio
0.09%
of 13F equity value
Holder Rank
#1
of 26 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BCHT Over Time

Shares Held

Position Value (USD)

Position in Pollution & Treatment Controls

Industrials · as of Jun 30, 2026

HEARTLAND ADVISORS INC holds $2,050,000 across 1 Pollution & Treatment Controls name. BCHT ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BCHT
Birchtech Corp.
This page
1,000,000 $2,050,000

All Filings in BCHT

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,050,000 1,000,000
2026-03-31 $1,900,000 1,000,000