Industrial and Commercial Fans and Blowers and Air Purification Equipment - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2024-08-20 13D/A PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 4.80
2023-01-06 13D/A CECO / CECO Environmental Corp. King Luther Capital Management Corp 1,689,919 4.90 -17.09
2017-04-03 13D/A PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 5.92
2017-04-03 13D/A PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 5.92
2017-01-19 13D/A PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 5.82
2017-01-09 13D/A PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 5.82
2016-10-19 13D PPIH / Perma-Pipe International Holdings, Inc. Dinger Carl W Iii 5.63
2016-09-06 13D CDTI / CDTi Advanced Materials, Inc. Kanis S.A. 5,012,708 52.60
2016-01-20 13D/A PIAC / Princeton Capital Corporation Capital Point Partners, L.P.
2015-09-18 13D PIAC / Princeton Capital Corporation Capital Point Partners, L.P. 104,562,000 86.80 -9.46
2015-07-13 13D PIAC / Princeton Capital Corporation Capital Point Partners, L.P. 115,484,327 96.00
2015-02-26 13D/A CDTI / CDTi Advanced Materials, Inc. RockPort Capital Partners, L.P. 0 0.00
2014-08-12 13D/A WUHN / Wuhan General Group (China), Inc. Yao Liangren 5,254,079 15.49
2014-03-28 13D/A WUHN / Wuhan General Group (China), Inc. Yao Liangren 3,844,952 11.33
2013-11-21 13D WUHN / Wuhan General Group (China), Inc. Yao Liangren 1,878,876 5.54