Form 13-F position report

PERMA-FIX ENVIRONMENTAL SVCS

Reported by MAK CAPITAL ONE LLC

Company profile Manager portfolio Source filing
PESI CUSIP 714157203 Manager CIK 0001385702
Latest reported change

Reported 1,032,958 shares, up 114,285 (12.4%) from the prior quarter.

Reported value 50.3%; share count 12.4% vs. the prior quarter.

Added
% of reported 13F value 2.07% This manager · Q2 2026
Shares 1,032,958 Quarter-end amount reported
Reported value $14,760,970 Fair value at quarter end
Consecutive quarters held 5 Through Q2 2026

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Manager history

Quarterly position history

How this manager's reported quarter-end position changed over time.

5 quarters
Quarter Activity Shares Change % of reported 13F Reported value Filed
Q2 2026 Added 1,032,958 +114,285 (12.4%) 2.07% $14,760,970 2026-08-14
Q1 2026 Unchanged 918,673 0 (0.0%) 1.45% $9,820,614 2026-05-15
Q4 2025 Added 918,673 +103,097 (12.6%) 1.27% $11,566,093 2026-02-17
Q3 2025 Added 815,576 +722,966 (780.7%) 1.27% $8,237,318 2025-11-14
Q2 2025 New 92,610 +92,610 (0.0%) 0.14% $974,257 2025-08-14
Institutional context

Who else reported the position

98 managers reported PERMA-FIX ENVIRONMENTAL SVCS for Q2 2026.

Manager Activity Shares Change % of reported 13F Reported value Tenure
BlackRock Inc Added 1,252,756 +82,453 < 0.01% $17,901,883 8 qtrs
MAK CAPITAL ONE LLC This report Added 1,032,958 +114,285 2.07% $14,760,970 5 qtrs
VANGUARD CAPITAL MANAGEMENT LLC Added 811,743 +52,308 < 0.01% $11,599,807 2 qtrs
PRESCOTT GROUP CAPITAL MANAGEMENT L L C Unchanged 777,142 0 0.96% $11,105,359 11 qtrs
DIAMOND HILL CAPITAL MANAGEMENT INC Added 642,533 +286,555 0.07% $9,181,797 8 qtrs
KENNEDY CAPITAL MANAGEMENT LLC New 610,903 +610,903 0.15% $8,729,804 1 qtr
Potomac Capital Management Inc Added 477,000 +180,300 4.65% $6,816,330 3 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 455,156 +22,455 < 0.01% $6,506,211 51 qtrs
HEARTLAND ADVISORS INC Unchanged 400,000 0 0.25% $5,716,000 51 qtrs
STATE STREET CORPORATION Added 349,744 +14,197 < 0.01% $4,997,842 21 qtrs
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Filing details and methodology As reported
Report period
June 30, 2026
Filed
August 14, 2026
Filing type
13F-HR
Position type
COM NEW

Voting authority reported

Sole
1,032,958
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.