01/07/2025
3:03 PM | Apostolou Stephanie L (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
2:57 PM | Koppers (Issuer)
Skrovanek Daniel J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
2:58 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
3:00 PM | Koppers (Issuer)
Lucas Stephen G (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
2:51 PM | Koppers (Issuer)
Washington Kevin (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
2:52 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/07/2025
2:54 PM | Koppers (Issuer)
Smith Jimmi Sue (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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 | |
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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 | |
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 | |
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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 | |
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) | |
