Reporting Manager
GAMCO INVESTORS, INC. ET AL
Symbol
MPTI
Disclosed Ownership
0 shares
Ownership
0%
Form type
SCHEDULE 13D/A
Filing time
16 Dec 2024, 16:00:38 UTC
Date of event
13 Dec 2024

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
GAMCO INVESTORS, INC. ET AL 0% 0 0 0 Peter Goldstein General Counsel 0000807249
GGCP, INC. 5.6% 159,000 159,000 0 David Goldman Attorney-In-Fact 0001238894
Associated Capital Group, Inc. 0% 0 0 0 Douglas R. Jamieson President and Chief Executive Officer 0001642122
GABELLI MARIO J 2.3% 64,500 64,500 0 David Goldman Attorney-In-Fact 0001185533