| SC 13G/A | 2024-02-07 | - | - | - | - | EDGAR |
| SC 13G/A | 2023-02-09 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 9,442,503 | 33.7% | EDGAR |
| SC 13G/A | 2022-02-09 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 9,400,385 | 34.5% | EDGAR |
| SC 13G/A | 2021-02-08 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 9,168,908 | 34.9% | EDGAR |
| SC 13G/A | 2020-02-04 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,990,863 | 34.7% | EDGAR |
| SC 13G/A | 2019-02-04 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,903,979 | 34.9% | EDGAR |
| SC 13G/A | 2018-02-01 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,756,954 | 34.8% | EDGAR |
| SC 13G/A | 2017-02-01 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,637,296 | 34.7% | EDGAR |
| SC 13G/A | 2016-02-01 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,482,473 | 34.2% | EDGAR |
| SC 13G/A | 2015-10-21 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2015-09-17 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 2,339,669 | 5.4% | EDGAR |
| SC 13G/A | 2015-09-17 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 2,646,108 | 6.1% | EDGAR |
| SC 13G/A | 2015-01-30 | ENDEAVOR FOUNDATION, INC. | CENTRAL SECURITIES CORP | 8,128,338 | 32.8% | EDGAR |
| SC 13G/A | 2014-02-10 | JOHNSON CHRISTIAN A ENDEAVOR FOUNDATION | CENTRAL SECURITIES CORP | 7,911,958 | 32.7% | EDGAR |
| SC 13G/A | 2013-02-06 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 4,068,723 | 5.1% | EDGAR |
| SC 13G/A | 2013-02-06 | JOHNSON CHRISTIAN A ENDEAVOR FOUNDATION | CENTRAL SECURITIES CORP | 7,515,678 | 32.4% | EDGAR |
| SC 13G/A | 2012-02-13 | JOHNSON CHRISTIAN A ENDEAVOR FOUNDATION | CENTRAL SECURITIES CORP | 7,546,705 | 32.8% | EDGAR |
| SC 13G/A | 2012-02-10 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 3,829,154 | 5.1% | EDGAR |
| SC 13G/A | 2011-02-11 | JOHNSON CHRISTIAN A ENDEAVOR FOUNDATION | CENTRAL SECURITIES CORP | 7,729,109 | 33.9% | EDGAR |
| SC 13G/A | 2011-02-11 | CENTRAL SECURITIES CORP | GeoMet, Inc. | 3,617,331 | 5.1% | EDGAR |