| Filed | Form | Description | |
|---|---|---|---|
| 3/9/26 | PRE 14A | PRE 14A | → |
| 3/31/25 | DEFA14A | NL INDUSTRIES, INC. SCHEDULE 14A DEFINITIVE ADDITIONAL MATERIALS | → |
| 3/26/25 | DEF 14A | DEF 14A | → |
| 3/27/24 | DEFA14A | NL INDUSTRIES, INC. SCHEDULE 14A DEFINITIVE ADDITIONAL MATERIALS | → |
| 3/27/24 | DEF 14A | DEF 14A | → |
| 3/29/23 | DEFA14A | NL INDUSTRIES, INC. DEF A14A | → |
| ↓ | |||
| Filed | Form | Description | |
|---|---|---|---|
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| 5/16/25 | 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | → |
| ↓ | |||