01/06/2021
3:17 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/06/2021
3:14 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/06/2021
3:04 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/17/2020
7:50 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
11/25/2020
8:21 AM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/19/2020
7:34 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
11/04/2020
8:21 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
11/04/2020
7:27 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
10/26/2020
7:31 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/30/2020
6:54 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
|
09/22/2020
7:30 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/01/2020
1:33 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/25/2020
7:46 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
08/10/2020
4:06 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/05/2020
7:50 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
08/05/2020
7:23 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
07/27/2020
7:47 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/17/2020
7:43 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/20/2020
3:14 PM | Koppers (Issuer)
NEUPAVER ALBERT J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/20/2020
7:19 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/07/2020
2:21 PM | Koppers (Issuer)
WILKERSON SONJA MICHELLE (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:19 PM | Koppers (Issuer)
Tritch Stephen R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:17 PM | Koppers (Issuer)
TESTONI LOUIS L (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:14 PM | Koppers (Issuer)
NEUPAVER ALBERT J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:12 PM | Koppers (Issuer)
MOTLEY DAVID L (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:10 PM | JENSEN TRACI L (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
2:08 PM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2020
9:58 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/06/2020
3:31 PM | Koppers (Filer)
| Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
04/27/2020
8:00 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
03/11/2020
1:08 PM | Apostolou Stephanie L (Reporting)
Koppers (Issuer)
| Form 3
Initial statement of beneficial ownership of securities | |
03/10/2020
12:58 PM | Koppers (Issuer)
ZUGAY MICHAEL (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/10/2020
12:56 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/10/2020
12:55 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/10/2020
12:53 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/10/2020
12:52 PM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/10/2020
12:50 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/09/2020
4:09 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4/A
| |
03/05/2020
6:12 PM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2020
5:54 PM | Koppers (Issuer)
ZUGAY MICHAEL (Reporting)
| Form 4/A
| |
03/05/2020
5:50 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4/A
| |
03/05/2020
5:49 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4/A
| |
03/05/2020
5:47 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4/A
| |
03/05/2020
5:46 PM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 4/A
| |
03/05/2020
5:44 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4/A
| |
03/05/2020
3:14 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2020
3:11 PM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2020
3:09 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:31 PM | Koppers (Issuer)
ZUGAY MICHAEL (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:30 PM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:28 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:24 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:23 PM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/04/2020
1:21 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2020
2:02 PM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2020
1:57 PM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2020
1:47 PM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2020
7:47 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
02/27/2020
6:55 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
02/27/2020
6:42 AM | Koppers (Filer)
| Form 424B3
| |
02/27/2020
5:37 AM | Koppers (Filer)
| Form S-3ASR
| |
02/27/2020
5:03 AM | Koppers (Filer)
| Form 10-K
Annual report pursuant to Section 13 or 15(d) | |
02/18/2020
11:05 AM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4/A
| |
02/18/2020
10:48 AM | Koppers (Issuer)
ZUGAY MICHAEL (Reporting)
| Form 4/A
| |
02/18/2020
10:46 AM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4/A
| |
02/18/2020
10:44 AM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4/A
| |
02/18/2020
10:42 AM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4/A
| |
02/18/2020
10:40 AM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4/A
| |
02/18/2020
10:37 AM | GROVES DANIEL R (Reporting)
Koppers (Issuer)
| Form 3/A
| |
02/18/2020
10:35 AM | Fenwick Douglas J (Reporting)
Koppers (Issuer)
| Form 4/A
| |
02/18/2020
10:31 AM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4/A
| |
02/18/2020
10:00 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
02/18/2020
9:50 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
02/13/2020
2:05 PM | Koppers (Subject)
STATE STREET CORP (Filed by)
| Form SC 13G/A
| |
02/13/2020
10:38 AM | Koppers (Issuer)
ZUGAY MICHAEL (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:36 AM | Koppers (Issuer)
Sullivan James A. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:34 AM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:33 AM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:31 AM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:29 AM | Fenwick Douglas J (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:27 AM | Dowd Joseph P (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/13/2020
10:25 AM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/31/2020
8:22 AM | BALL M LEROY (Reporting)
Koppers (Issuer)
| Form 5
Annual statement of changes in beneficial ownership of securities | |
01/06/2020
10:11 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
11/14/2019
10:13 AM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/07/2019
11:03 AM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
11/07/2019
8:02 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/26/2019
9:40 AM | Division of Investment, Department of the Treasury, State of New Jersey (Filed by)
Koppers (Subject)
| Form SC 13G/A
| |
09/24/2019
3:05 PM | Hyde Leslie S (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/06/2019
2:56 PM | Feng Xudong (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/14/2019
9:38 AM | Johnson R. Michael (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/08/2019
12:08 PM | Koppers (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
08/08/2019
8:11 AM | Koppers (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/04/2019
2:11 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/15/2019
2:06 PM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/15/2019
2:02 PM | Johnson R. Michael (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/14/2019
12:30 PM | Johnson R. Michael (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/10/2019
4:06 PM | Johnson R. Michael (Reporting)
Koppers (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/09/2019
1:25 PM | Koppers (Issuer)
Pearce Bradley A (Reporting)
| Form 3
Initial statement of beneficial ownership of securities | |
05/09/2019
1:18 PM | Koppers (Issuer)
Lacy Steven R (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
