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 | |
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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 | |
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 | |
12/20/2023
3:41 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/20/2023
10:42 AM | Koppers (Subject)
Pearce Bradley A (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/20/2023
10:33 AM | BALL M LEROY (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/14/2023
4:35 PM | Apostolou Stephanie L (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
4:12 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
4:15 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
4:18 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
3:49 PM | Koppers (Issuer)
Koppers (Issuer)
Washington Kevin (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
3:54 PM | Koppers (Issuer)
Koppers (Issuer)
Smith Jimmi Sue (Reporting)
Smith Jimmi Sue (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
3:37 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/14/2023
12:22 PM | Dowd Joseph P (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/14/2023
9:05 AM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/13/2023
3:32 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/12/2023
3:29 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/12/2023
3:38 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/11/2023
3:33 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/08/2023
4:52 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/08/2023
3:51 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/07/2023
3:25 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/06/2023
3:15 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/06/2023
3:24 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/05/2023
3:20 PM | Koppers (Subject)
Sullivan James A. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/04/2023
3:20 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/01/2023
5:59 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/01/2023
8:55 AM | BALL M LEROY (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
11/29/2023
3:38 PM | Hyde Leslie S (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
11/20/2023
3:11 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/17/2023
10:23 AM | Dowd Joseph P (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
11/14/2023
3:22 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/14/2023
10:18 AM | BALL M LEROY (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
11/03/2023
11:25 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
11/03/2023
7:21 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
10/12/2023
7:46 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/19/2023
3:33 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/14/2023
7:32 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/13/2023
3:34 PM | Koppers (Issuer)
MOTLEY DAVID L (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/13/2023
3:37 PM | Koppers (Issuer)
WILKERSON SONJA MICHELLE (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/13/2023
3:31 PM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/06/2023
3:58 PM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/05/2023
4:54 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/01/2023
4:16 PM | Hyde Leslie S (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/31/2023
4:29 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/07/2023
9:25 AM | Koppers (Subject)
Pearce Bradley A (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/03/2023
3:43 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/03/2023
3:34 PM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
08/03/2023
11:07 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
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08/03/2023
7:27 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/14/2023
3:38 PM | Koppers (Issuer)
MOTLEY DAVID L (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/14/2023
3:41 PM | Koppers (Issuer)
Washington Kevin (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/14/2023
3:44 PM | Koppers (Issuer)
WILKERSON SONJA MICHELLE (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/14/2023
3:35 PM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/08/2023
3:30 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/06/2023
1:59 PM | Dowd Joseph P (Reporting)
Koppers (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
05/05/2023
10:55 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/05/2023
7:40 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
