12/18/2024 3:36 PM | Koppers (Issuer) Skrovanek Daniel J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:41 PM | Koppers (Issuer) Smith Jimmi Sue (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:44 PM | Koppers (Issuer) Sullivan James A. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:47 PM | Koppers (Issuer) Washington Kevin (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:22 PM | Koppers (Issuer) Pearce Bradley A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:27 PM | Apostolou Stephanie L (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2024 3:30 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
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12/18/2024 3:33 PM | Koppers (Issuer) Lucas Stephen G (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/17/2024 4:22 PM | Koppers (Issuer) WILKERSON SONJA MICHELLE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/17/2024 4:25 PM | Koppers (Issuer) MOTLEY DAVID L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/17/2024 4:27 PM | Feng Xudong (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/17/2024 3:31 PM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
12/09/2024 6:58 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
12/05/2024 3:45 PM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
11/22/2024 10:22 AM | Koppers (Subject) Tritch Stephen R (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/20/2024 3:17 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/20/2024 3:23 PM | Koppers (Issuer) Tritch Stephen R (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/15/2024 3:19 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/14/2024 3:57 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/14/2024 9:31 AM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/13/2024 3:32 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/12/2024 11:45 AM | Koppers (Subject) Pearce Bradley A (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/08/2024 10:59 AM | Koppers (Filer)
| Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
11/08/2024 7:24 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
10/18/2024 2:31 PM | BlackRock, Inc. (Filed by) Koppers (Subject)
| Form SC 13G/A | |
10/07/2024 4:38 PM | FULLER & THALER ASSET MANAGEMENT, INC. (Filed by) Koppers (Subject)
| Form SC 13G/A | |
09/18/2024 4:19 PM | Koppers (Issuer) MOTLEY DAVID L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
09/18/2024 4:13 PM | Koppers (Issuer) WILKERSON SONJA MICHELLE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
09/18/2024 4:16 PM | Feng Xudong (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/30/2024 3:01 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/29/2024 2:12 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
08/27/2024 3:06 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
08/20/2024 4:02 PM | Dowd Joseph P (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/19/2024 11:40 AM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
08/08/2024 11:16 AM | Koppers (Filer)
| Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
08/08/2024 7:24 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
06/12/2024 3:13 PM | Koppers (Issuer) MOTLEY DAVID L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/12/2024 3:16 PM | Koppers (Issuer) WILKERSON SONJA MICHELLE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2024 9:25 AM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/28/2024 10:31 AM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/24/2024 12:47 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
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05/17/2024 2:35 PM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/06/2024 3:49 PM | Feng Xudong (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/06/2024 3:52 PM | JENSEN TRACI L (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/06/2024 3:54 PM | Koppers (Issuer) MOTLEY DAVID L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/06/2024 3:56 PM | Koppers (Issuer) NEUPAVER ALBERT J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/03/2024 7:26 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/02/2024 3:15 PM | Koppers (Filer)
| Form 8-K/A | |
04/15/2024 3:19 PM | Koppers (Issuer) Lucas Stephen G (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
04/15/2024 7:06 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
03/27/2024 3:46 PM | Koppers (Issuer) NEUPAVER ALBERT J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:49 PM | JENSEN TRACI L (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:52 PM | Koppers (Issuer) Lucas Stephen G (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:37 PM | Koppers (Issuer) Tritch Stephen R (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:40 PM | Koppers (Issuer) TESTONI LOUIS L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:43 PM | Koppers (Issuer) Sandifer Andrew D (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:31 PM | Feng Xudong (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/27/2024 3:34 PM | Koppers (Issuer) Koppers (Issuer) MOTLEY DAVID L (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/21/2024 3:21 PM | Hyde Leslie S (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/08/2024 3:31 PM | Koppers (Filer)
| Form PRE 14A | |
03/07/2024 3:46 PM | Koppers (Issuer) Washington Kevin (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/07/2024 3:36 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/07/2024 3:40 PM | Koppers (Issuer) Sullivan James A. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/07/2024 3:43 PM | Dowd Joseph P (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:55 PM | Dowd Joseph P (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:59 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 5:04 PM | Koppers (Issuer) Sullivan James A. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 3:36 PM | Koppers (Subject) Washington Kevin (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/06/2024 1:05 PM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/06/2024 1:17 PM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144/A | |
03/06/2024 11:14 AM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/05/2024 4:07 PM | Koppers (Issuer) Sullivan James A. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/05/2024 3:53 PM | Koppers (Issuer) Pearce Bradley A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/04/2024 8:37 PM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/04/2024 4:50 PM | BALL M LEROY (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/01/2024 5:39 PM | Koppers (Subject) Sullivan James A. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/01/2024 3:34 PM | Hyde Leslie S (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/01/2024 3:20 PM | Dowd Joseph P (Reporting) Koppers (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
02/28/2024 11:09 AM | Koppers (Filer)
| Form 10-K Annual report pursuant to Section 13 or 15(d) | |
02/28/2024 7:17 AM | Koppers (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
02/15/2024 3:33 PM | Koppers (Issuer) Vartanian Nishan J. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
02/12/2024 6:50 PM | FULLER & THALER ASSET MANAGEMENT, INC. (Filed by) Koppers (Subject)
| Form SC 13G/A | |
02/12/2024 5:06 AM | Koppers (Subject) Rubric Capital Management LP (Filed by)
| Form SC 13G/A | |
01/08/2024 6:42 PM | Hyde Leslie S (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:43 PM | Koppers (Issuer) Lucas Stephen G (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:43 PM | Koppers (Issuer) Pearce Bradley A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:43 PM | Koppers (Issuer) Skrovanek Daniel J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:44 PM | Koppers (Issuer) Smith Jimmi Sue (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:45 PM | Koppers (Issuer) Sullivan James A. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:46 PM | Koppers (Issuer) Washington Kevin (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:39 PM | Apostolou Stephanie L (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
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01/08/2024 6:40 PM | BALL M LEROY (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/08/2024 6:41 PM | Dowd Joseph P (Reporting) Koppers (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |