Last 12 months
Inside the activity.
0 purchase rows · 14 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Mar 2026 | 0 | 4 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 1 |
| Jun 2026 | 0 | 2 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 7 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 14, 2026 Filed Sep 15, 2026 20:20 UTC |
WILKERSON SONJA MICHELLEDirector
|
GrantDividend Equivalent Rights · Derivative | 29.352 | $0.00 | $0.00 |
DisclosureSEC source: 0001245155-26-000006 · wk-form4_1789503624.xml · derivative · entry 1 WILKERSON SONJA MICHELLE · CIK 0001245155 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 385.202 Underlying: Common Stock · 29.352 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| September 14, 2026 Filed Sep 15, 2026 20:19 UTC |
Feng XudongDirector
|
GrantDividend Equivalent Rights · Derivative | 32.946 | $0.00 | $0.00 |
DisclosureSEC source: 0001463649-26-000006 · wk-form4_1789503549.xml · derivative · entry 1 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 444.837 Underlying: Common Stock · 32.946 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| September 14, 2026 Filed Sep 15, 2026 20:17 UTC |
MOTLEY DAVID LDirector
|
GrantDividend Equivalent Rights · Derivative | 19.984 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000013 · wk-form4_1789503423.xml · derivative · entry 1 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 316.148 Underlying: Common Stock · 19.984 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| September 14, 2026 Filed Sep 15, 2026 20:15 UTC |
Sandifer Andrew DDirector
|
GrantDividend Equivalent Rights · Derivative | 13.52 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000052 · wk-form4_1789503333.xml · derivative · entry 1 Sandifer Andrew D · CIK 0001739998 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 116.831 Underlying: Common Stock · 13.52 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| August 31, 2026 Filed Sep 1, 2026 20:23 UTC |
BALL M LEROYDirector · CEO
|
GiftCommon Stock | 200 | $0.00 | $0.00 |
DisclosureSEC source: 0001229771-26-000020 · wk-form4_1788294201.xml · nonDerivative · entry 2 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 429,355.4007 Read SEC document |
| August 31, 2026 Filed Sep 1, 2026 20:23 UTC |
BALL M LEROYDirector · CEO
|
SaleCommon Stock | 4,000 | $45.96 | $183,840.00 |
DisclosureSEC source: 0001229771-26-000020 · wk-form4_1788294201.xml · nonDerivative · entry 1 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 429,555.4007 Read SEC document |
| August 19, 2026 Filed Aug 20, 2026 20:08 UTC |
BALL M LEROYDirector · CEO
|
SaleCommon Stock | 3,000 | $45.84 | $137,520.00 |
DisclosureSEC source: 0001229771-26-000018 · wk-form4_1787256534.xml · nonDerivative · entry 1 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 433,555.4007 F1 · balance_after: Includes 312 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on June 30, 2026. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d). Read SEC document |
| August 12, 2026 Filed Aug 13, 2026 21:11 UTC |
Lucas Stephen GSVP, Culture and Engagement
|
SaleCommon Stock | 1,308 | $44.55 | $58,271.40 |
DisclosureSEC source: 0001919175-26-000008 · wk-form4_1786655473.xml · nonDerivative · entry 1 Lucas Stephen G · CIK 0001919175 · SVP, Culture and Engagement 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 34,345 F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.52 to $44.59, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Read SEC document |
| August 11, 2026 Filed Aug 12, 2026 22:29 UTC |
Sullivan James A.President and CTO
|
SaleCommon Stock | 7,500 | $50.00 | $375,000.00 |
DisclosureSEC source: 0001450800-26-000006 · wk-form4_1786573776.xml · nonDerivative · entry 1 Sullivan James A. · CIK 0001450800 · President and CTO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 82,897.738 Read SEC document |
| August 10, 2026 Filed Aug 11, 2026 20:25 UTC | SaleCommon Stock | 2,000 | $51.01 | $102,020.00 |
DisclosureSEC source: 0001776180-26-000008 · wk-form4_1786479915.xml · nonDerivative · entry 1 Pearce Bradley A · CIK 0001776180 · CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 41,037 Read SEC document |
|
| August 07, 2026 Filed Aug 11, 2026 20:21 UTC |
Sullivan James A.President and CTO
|
SaleCommon Stock | 100 | $51.22 | $5,122.00 |
DisclosureSEC source: 0001315257-26-000050 · wk-form4_1786479709.xml · nonDerivative · entry 2 Sullivan James A. · CIK 0001450800 · President and CTO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 90,397.738 Read SEC document |
| August 07, 2026 Filed Aug 11, 2026 20:21 UTC |
Sullivan James A.President and CTO
|
SaleCommon Stock | 79,900 | $50.01 | $3,995,799.00 |
DisclosureSEC source: 0001315257-26-000050 · wk-form4_1786479709.xml · nonDerivative · entry 1 Sullivan James A. · CIK 0001450800 · President and CTO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 90,497.738 F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.00 to $50.28, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Read SEC document |
| June 18, 2026 Filed Jun 23, 2026 22:27 UTC |
BALL M LEROYDirector · CEO
|
SaleCommon Stock | 3,412 | $43.90 | $149,786.80 |
DisclosureSEC source: 0001229771-26-000016 · wk-form4_1782253675.xml · nonDerivative · entry 1 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 436,243.4007 Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:04 UTC |
Sandifer Andrew DDirector
|
GrantDividend Equivalent Rights · Derivative | 13.979 | $0.00 | $0.00 |
DisclosureSEC source: 0001739998-26-000006 · wk-form4_1781726670.xml · derivative · entry 1 Sandifer Andrew D · CIK 0001739998 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 103.311 Underlying: Common Stock · 13.979 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:09 UTC |
Feng XudongDirector
|
GrantDividend Equivalent Rights · Derivative | 34.065 | $0.00 | $0.00 |
DisclosureSEC source: 0001463649-26-000004 · wk-form4_1781726939.xml · derivative · entry 1 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 411.891 Underlying: Common Stock · 34.065 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:07 UTC |
WILKERSON SONJA MICHELLEDirector
|
GrantDividend Equivalent Rights · Derivative | 30.347 | $0.00 | $0.00 |
DisclosureSEC source: 0001245155-26-000004 · wk-form4_1781726864.xml · derivative · entry 1 WILKERSON SONJA MICHELLE · CIK 0001245155 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 355.85 Underlying: Common Stock · 30.347 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:05 UTC |
MOTLEY DAVID LDirector
|
GrantDividend Equivalent Rights · Derivative | 20.663 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000011 · wk-form4_1781726735.xml · derivative · entry 1 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 296.164 Underlying: Common Stock · 20.663 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional restricted stock units ("RSUs") credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| June 11, 2026 Filed Jun 15, 2026 20:10 UTC |
BALL M LEROYDirector · CEO
|
GiftCommon Stock | 300 | $0.00 | $0.00 |
DisclosureSEC source: 0001229771-26-000013 · wk-form4_1781554242.xml · nonDerivative · entry 2 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 439,655.4007 Read SEC document |
| June 11, 2026 Filed Jun 15, 2026 20:10 UTC |
BALL M LEROYDirector · CEO
|
SaleCommon Stock | 4,141 | $41.34 | $171,188.94 |
DisclosureSEC source: 0001229771-26-000013 · wk-form4_1781554242.xml · nonDerivative · entry 1 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 439,955.4007 F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.88 to $41.53, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Read SEC document |
| June 03, 2026 Filed Jun 4, 2026 20:05 UTC |
Feng XudongDirector
|
GiftCommon Stock | 5,695 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000043 · wk-form4_1780603501.xml · nonDerivative · entry 1 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 26,489 Read SEC document |
| May 26, 2026 Filed May 27, 2026 20:08 UTC |
Brenner Eric D.CFO and Treasurer
|
GrantCommon Stock | 6,620 | $0.00 | $0.00 |
DisclosureSEC source: 0002136316-26-000004 · wk-form4_1779912507.xml · nonDerivative · entry 1 Brenner Eric D. · CIK 0002136316 · CFO and Treasurer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,620 F1 · security: The reporting person was awarded time-based restricted stock units on May 26, 2026, which will vest in four annual installments of 25 percent beginning January 5, 2027. Read SEC document |
| May 13, 2026 Filed May 14, 2026 20:02 UTC |
BALL M LEROYDirector · CEO
|
SaleCommon Stock | 2,659 | $42.55 | $113,140.45 |
DisclosureSEC source: 0001229771-26-000010 · wk-form4_1778788949.xml · nonDerivative · entry 1 BALL M LEROY · CIK 0001229771 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 444,096.4007 F1 · balance_after: Includes 496 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on March 31, 2026. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d). Read SEC document |
| May 12, 2026 Filed May 14, 2026 20:05 UTC |
Pearce Bradley AInterim CFO and CAO
|
GrantCommon Stock | 5,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001776180-26-000006 · wk-form4_1778789116.xml · nonDerivative · entry 1 Pearce Bradley A · CIK 0001776180 · Interim CFO and CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 43,037 F1 · security: The reporting person was awarded time-based restricted stock units on May 12, 2026, which will vest in full on May 12, 2029. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:15 UTC |
Sandifer Andrew DDirector
|
GrantRestricted Stock Units · Derivative | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001739998-26-000004 · wk-form4_1778530506.xml · derivative · entry 1 Sandifer Andrew D · CIK 0001739998 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,137 Underlying: Common Stock · 3,280 shares Expires not disclosed F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") represent the right to receive shares of common stock on a one-for-one basis. F2 · derivative.exercise_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:10 UTC |
Feng XudongDirector
|
GrantCommon Stock | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001463649-26-000002 · wk-form4_1778530252.xml · nonDerivative · entry 1 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,184 F1 · security: The reporting person was awarded time-based restricted stock units. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:17 UTC |
WILKERSON SONJA MICHELLEDirector
|
GrantRestricted Stock Units · Derivative | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001245155-26-000002 · wk-form4_1778530632.xml · derivative · entry 1 WILKERSON SONJA MICHELLE · CIK 0001245155 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,976 Underlying: Common Stock · 3,280 shares Expires not disclosed F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") represent the right to receive shares of common stock on a one-for-one basis. F2 · derivative.exercise_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:07 UTC |
NEUPAVER ALBERT JDirector
|
Exercise / conversionDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001190210-26-000004 · wk-form4_1778530064.xml · derivative · entry 2 NEUPAVER ALBERT J · CIK 0001190210 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 50 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · shares: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.expiration_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:07 UTC |
NEUPAVER ALBERT JDirector
|
Exercise / conversionCommon Stock | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001190210-26-000004 · wk-form4_1778530064.xml · nonDerivative · entry 1 NEUPAVER ALBERT J · CIK 0001190210 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,834 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. F1 · price: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:19 UTC |
MOTLEY DAVID LDirector
|
GrantRestricted Stock Units · Derivative | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000008 · wk-form4_1778530756.xml · derivative · entry 3 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 13,198 Underlying: Common Stock · 3,280 shares Expires not disclosed F3 · derivative.exercise_price: RSUs represent the right to receive shares of common stock on a one-for-one basis. F4 · derivative.exercise_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F4 · derivative.expiration_date: The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:19 UTC |
MOTLEY DAVID LDirector
|
Exercise / conversionDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000008 · wk-form4_1778530756.xml · derivative · entry 2 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 275.501 Underlying: Common Stock · 50 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: These DERs were released in connection with the vesting of Restricted Stock Units (" RSUs") granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · shares: These DERs were released in connection with the vesting of Restricted Stock Units (" RSUs") granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: These DERs were released in connection with the vesting of Restricted Stock Units (" RSUs") granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.expiration_date: These DERs were released in connection with the vesting of Restricted Stock Units (" RSUs") granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:19 UTC |
MOTLEY DAVID LDirector
|
Exercise / conversionCommon Stock | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000008 · wk-form4_1778530756.xml · nonDerivative · entry 1 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,044 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. F1 · price: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:13 UTC |
Posadas Laura JDirector
|
Exercise / conversionDividend Equivalent Rights · Derivative | 11 | $0.00 | $0.00 |
DisclosureSEC source: 0002092070-26-000004 · wk-form4_1778530389.xml · derivative · entry 3 Posadas Laura J · CIK 0002092070 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 11 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: These DERs were released in connection with the vesting of RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · shares: These DERs were released in connection with the vesting of RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.exercise_date: These DERs were released in connection with the vesting of RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.expiration_date: These DERs were released in connection with the vesting of RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:13 UTC |
Posadas Laura JDirector
|
GrantCommon Stock | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0002092070-26-000004 · wk-form4_1778530389.xml · nonDerivative · entry 2 Posadas Laura J · CIK 0002092070 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,531 F2 · security: The reporting person was awarded time-based restricted stock units ("RSUs"). Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:13 UTC |
Posadas Laura JDirector
|
Exercise / conversionCommon Stock | 11 | $0.00 | $0.00 |
DisclosureSEC source: 0002092070-26-000004 · wk-form4_1778530389.xml · nonDerivative · entry 1 Posadas Laura J · CIK 0002092070 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,251 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. F1 · price: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:05 UTC |
Vartanian Nishan J.Director
|
Exercise / conversionDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001564614-26-000004 · wk-form4_1778529935.xml · derivative · entry 3 Vartanian Nishan J. · CIK 0001564614 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 50 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · shares: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.exercise_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.expiration_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:05 UTC |
Vartanian Nishan J.Director
|
GrantCommon Stock | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001564614-26-000004 · wk-form4_1778529935.xml · nonDerivative · entry 2 Vartanian Nishan J. · CIK 0001564614 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,664 F2 · security: The reporting person was awarded time-based restricted stock units ("RSUs"). Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:05 UTC |
Vartanian Nishan J.Director
|
Exercise / conversionCommon Stock | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001564614-26-000004 · wk-form4_1778529935.xml · nonDerivative · entry 1 Vartanian Nishan J. · CIK 0001564614 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,384 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. F1 · price: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:01 UTC |
JENSEN TRACI LDirector
|
Exercise / conversionDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001533627-26-000005 · wk-form4_1778529708.xml · derivative · entry 3 JENSEN TRACI L · CIK 0001533627 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 50 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · shares: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.exercise_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.expiration_date: These DERs were released in connection with the vesting of RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:01 UTC |
JENSEN TRACI LDirector
|
GrantCommon Stock | 3,280 | $0.00 | $0.00 |
DisclosureSEC source: 0001533627-26-000005 · wk-form4_1778529708.xml · nonDerivative · entry 2 JENSEN TRACI L · CIK 0001533627 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 35,339.104 F2 · security: The reporting person was awarded time-based restricted stock units ("RSUs"). Read SEC document |
| May 07, 2026 Filed May 11, 2026 20:01 UTC |
JENSEN TRACI LDirector
|
Exercise / conversionCommon Stock | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001533627-26-000005 · wk-form4_1778529708.xml · nonDerivative · entry 1 JENSEN TRACI L · CIK 0001533627 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,059.104 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. F1 · price: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:02 UTC |
Sandifer Andrew DDirector
|
GrantDividend Equivalent Rights · Derivative | 5.268 | $0.00 | $0.00 |
DisclosureSEC source: 0001739998-26-000002 · wk-form4_1774468942.xml · derivative · entry 2 Sandifer Andrew D · CIK 0001739998 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 89.332 Underlying: Common Stock · 5.268 shares Expires not disclosed F3 · derivative.exercise_price: The DERs accrued with respect to additional RSUs credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:02 UTC |
Sandifer Andrew DDirector
|
GrantDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001739998-26-000002 · wk-form4_1774468942.xml · derivative · entry 1 Sandifer Andrew D · CIK 0001739998 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 84.064 Underlying: Common Stock · 50 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:09 UTC |
Feng XudongDirector
|
GrantDividend Equivalent Rights · Derivative | 29.91 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000022 · wk-form4_1774469347.xml · derivative · entry 2 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 377.826 Underlying: Common Stock · 29.91 shares Expires not disclosed F3 · derivative.exercise_price: The DERs accrued with respect to additional RSUs credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:09 UTC |
Feng XudongDirector
|
GrantDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000022 · wk-form4_1774469347.xml · derivative · entry 1 Feng Xudong · CIK 0001463649 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 347.916 Underlying: Common Stock · 50 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:20 UTC |
WILKERSON SONJA MICHELLEDirector
|
GrantDividend Equivalent Rights · Derivative | 25.35 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000024 · wk-form4_1774470018.xml · derivative · entry 2 WILKERSON SONJA MICHELLE · CIK 0001245155 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 325.503 Underlying: Common Stock · 25.35 shares Expires not disclosed F3 · derivative.exercise_price: The DERs accrued with respect to additional RSUs credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:20 UTC |
WILKERSON SONJA MICHELLEDirector
|
GrantDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001315257-26-000024 · wk-form4_1774470018.xml · derivative · entry 1 WILKERSON SONJA MICHELLE · CIK 0001245155 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 300.153 Underlying: Common Stock · 50 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F2 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F2 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:05 UTC |
NEUPAVER ALBERT JDirector
|
GrantDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001190210-26-000002 · wk-form4_1774469102.xml · derivative · entry 1 NEUPAVER ALBERT J · CIK 0001190210 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50 Underlying: Common Stock · 50 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.exercise_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.expiration_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:18 UTC |
Vartanian Nishan J.Director
|
GrantDividend Equivalent Rights · Derivative | 50 | $0.00 | $0.00 |
DisclosureSEC source: 0001564614-26-000002 · wk-form4_1774469923.xml · derivative · entry 1 Vartanian Nishan J. · CIK 0001564614 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50 Underlying: Common Stock · 50 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.exercise_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.expiration_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on May 8, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:17 UTC |
Posadas Laura JDirector
|
GrantDividend Equivalent Rights · Derivative | 11 | $0.00 | $0.00 |
DisclosureSEC source: 0002092070-26-000002 · wk-form4_1774469821.xml · derivative · entry 1 Posadas Laura J · CIK 0002092070 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11 Underlying: Common Stock · 11 shares Expires not disclosed F1 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.exercise_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F1 · derivative.expiration_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based restricted stock units ("RSUs") credited to the reporting person with respect to RSUs granted on November 5, 2025. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| March 23, 2026 Filed Mar 25, 2026 20:13 UTC |
MOTLEY DAVID LDirector
|
GrantDividend Equivalent Rights · Derivative | 25.35 | $0.00 | $0.00 |
DisclosureSEC source: 0001584601-26-000004 · wk-form4_1774469632.xml · derivative · entry 2 MOTLEY DAVID L · CIK 0001584601 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 325.501 Underlying: Common Stock · 25.35 shares Expires not disclosed F2 · derivative.exercise_price: The DERs accrued with respect to additional RSUs credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.exercise_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. F3 · derivative.expiration_date: Once released, the RSUs corresponding to these DERs will become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.