Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Koppers Holdings Inc.KOP · Entity 5058 | Chief Legal&Sus Officer & Sec. | February 26, 2026 | March 02, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Koppers Holdings Inc.
Report date February 26, 2026 · Filed March 02, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 66,125 |
Reported balance
After 2026-02-26 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-02-26 · Grant · Acquired 7,223 · Balance 66,125 F1: On January 4, 2023, the reporting person was granted performance share units ("PSUs") for which the performance criteria for the measurement period from January 1, 2023 through December 31, 2025 have been satisfied. |
| Common StockSEC Table I · non-derivative | Direct | 66,299 |
Reported balance
After 2026-02-26 transaction · row 2
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 2 · 2026-02-26 · Exercise / conversion · Acquired 174 · Balance 66,299 F2: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis. |
| Common StockSEC Table I · non-derivative | Direct | 63,150 |
Reported balance
After 2026-02-26 transaction · row 3
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 3 · 2026-02-26 · Tax withholding · Disposed 3,149 · Balance 63,150 F3: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of PSUs. |
| Dividend Equivalent RightsSEC Table II · derivative / convertible security | Direct | 322 |
Reported balance
After 2026-02-26 transaction · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · 2026-02-26 · Grant · Acquired 174 · Balance 322 F4: The DERs accrued with respect to additional PSUs credited to the reporting person with respect to PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. |
| Dividend Equivalent RightsSEC Table II · derivative / convertible security | Direct | 148 |
Reported balance
After 2026-02-26 transaction · row 5
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 5 · 2026-02-26 · Exercise / conversion · Disposed 174 · Balance 148 F5: These DERs were released in connection with the vesting of PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. |
Filing footnotes · ownership attribution and instrument terms
F1: On January 4, 2023, the reporting person was granted performance share units ("PSUs") for which the performance criteria for the measurement period from January 1, 2023 through December 31, 2025 have been satisfied.
F2: Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis.
F3: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of PSUs.
F4: The DERs accrued with respect to additional PSUs credited to the reporting person with respect to PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.
F5: These DERs were released in connection with the vesting of PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.
Transaction history
JSON APIPurchases/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 | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| January 05, 2023 Filed Jan 9, 2023 17:50 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Exercise / conversionCommon Stock | 14 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-002599 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,209.8708 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 |
| January 04, 2023 Filed Jan 5, 2023 18:29 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantCommon Stock | 6,222 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-002069 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,195.8708 F1 · security: The reporting person was awarded time-based restricted stock units on January 4, 2023, which will vest in annual installments of one-third each over three years. F2 · balance_after: Includes 825 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on March 31, 2022 and June 30, 2022. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d). Read SEC document |
| January 03, 2023 Filed Jan 5, 2023 18:29 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantDividend Equivalent Rights · Derivative | 88 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-002069 · doc4.xml · derivative · entry 2 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 88 Underlying: Common Stock · 88 shares Expires not disclosed F3 · derivative.exercise_price: The dividend equivalent rights ("DERs") accrued with respect to additional time-based and performance-based restricted stock units ("RSUs" and "PSUs", respectively) credited to the reporting person. Of this total, 78 DERs accrued with respect to RSUs granted on March 6, 2019, March 3, 2020, January 4, 2021, and January 4, 2022, and 10 DERs accrued with respect to PSUs granted on January 4, 2021. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.exercise_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based and performance-based restricted stock units ("RSUs" and "PSUs", respectively) credited to the reporting person. Of this total, 78 DERs accrued with respect to RSUs granted on March 6, 2019, March 3, 2020, January 4, 2021, and January 4, 2022, and 10 DERs accrued with respect to PSUs granted on January 4, 2021. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. F3 · derivative.expiration_date: The dividend equivalent rights ("DERs") accrued with respect to additional time-based and performance-based restricted stock units ("RSUs" and "PSUs", respectively) credited to the reporting person. Of this total, 78 DERs accrued with respect to RSUs granted on March 6, 2019, March 3, 2020, January 4, 2021, and January 4, 2022, and 10 DERs accrued with respect to PSUs granted on January 4, 2021. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock. Read SEC document |
| March 04, 2022 Filed Mar 8, 2022 15:09 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Exercise / conversionRestricted Stock Units · Derivative | 3,514 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-016989 · doc4.xml · derivative · entry 3 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 3,514 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. F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis. F3 · derivative.exercise_date: Represents previously granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied, as reported in the reporting person's Form 4 filed on January 7, 2022, as amended on February 17, 2022. F3 · derivative.expiration_date: Represents previously granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied, as reported in the reporting person's Form 4 filed on January 7, 2022, as amended on February 17, 2022. Read SEC document |
| March 04, 2022 Filed Mar 8, 2022 15:09 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 1,638 | $28.18 | $46,158.84 |
DisclosureSEC source: 0001209191-22-016989 · doc4.xml · nonDerivative · entry 2 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 23,148.8708 F2 · acquired: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of time-based restricted stock units and performance share units. Read SEC document |
| March 04, 2022 Filed Mar 8, 2022 15:09 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Exercise / conversionCommon Stock | 3,514 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001209191-22-016989 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 24,786.8708 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 · price: Restricted stock units convert into common stock on a one-for-one basis. Read SEC document |
| March 03, 2022 Filed Mar 7, 2022 15:59 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 801 | $28.96 | $23,196.96 |
DisclosureSEC source: 0001209191-22-016594 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 21,272.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| March 02, 2022 Filed Mar 4, 2022 16:41 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 45 | $28.49 | $1,282.05 |
DisclosureSEC source: 0001209191-22-016297 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,073.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| January 05, 2022 Filed Jan 7, 2022 18:01 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantRestricted Stock Units · Derivative | 1,346 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-002526 · doc4.xml · derivative · entry 3 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,346 Underlying: Common Stock · 1,346 shares Expires not disclosed F2 · derivative.exercise_price: Restricted stock units represent the right to receive shares of common stock on a one-for-one basis and may be settled in cash or in shares of common stock. F5 · derivative.exercise_date: On January 4, 2021, the reporting person was granted performance share units for which the performance criteria for the one-year performance period from January 1, 2021 through December 31, 2021 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through January 5, 2024. If the Company's total shareholder return over the three-year period of January 1, 2021 through December 31, 2023 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 150% of the target number. F5 · derivative.expiration_date: On January 4, 2021, the reporting person was granted performance share units for which the performance criteria for the one-year performance period from January 1, 2021 through December 31, 2021 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through January 5, 2024. If the Company's total shareholder return over the three-year period of January 1, 2021 through December 31, 2023 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 150% of the target number. Read SEC document |
| January 05, 2022 Filed Jan 7, 2022 18:01 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantRestricted Stock Units · Derivative | 909 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-002526 · doc4.xml · derivative · entry 2 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,473 Underlying: Common Stock · 909 shares Expires not disclosed F2 · derivative.exercise_price: Restricted stock units represent the right to receive shares of common stock on a one-for-one basis and may be settled in cash or in shares of common stock. F3 · derivative.exercise_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied. F3 · derivative.expiration_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied. F4 · balance_after: All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through March 6, 2022. Read SEC document |
| January 05, 2022 Filed Jan 7, 2022 18:01 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 429 | $33.27 | $14,272.83 |
DisclosureSEC source: 0001209191-22-002526 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,118.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| January 05, 2022 Filed Feb 17, 2022 14:38 UTC Amendment | Koppers Holdings Inc. KOP · Entity 5058 | GrantRestricted Stock Units · Derivative | 1,405 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-010654 · doc4a.xml · derivative · entry 2 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,405 Underlying: Common Stock · 1,405 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units represent the right to receive shares of common stock on a one-for-one basis and may be settled in cash or in shares of common stock. F5 · shares: This Form 4 amendment is being filed to correct the number of performance share units awarded to the reporting person for the one-year performance period from January 1, 2021 through December 31, 2021. F6 · derivative.exercise_date: On January 4, 2021, the reporting person was granted performance share units for which the performance criteria for the one-year performance period from January 1, 2021 through December 31, 2021 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through January 5, 2024. If the Company's total shareholder return over the three-year period of January 1, 2021 through December 31, 2023 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 150% of the target number. F6 · derivative.expiration_date: On January 4, 2021, the reporting person was granted performance share units for which the performance criteria for the one-year performance period from January 1, 2021 through December 31, 2021 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through January 5, 2024. If the Company's total shareholder return over the three-year period of January 1, 2021 through December 31, 2023 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 150% of the target number. Read SEC document |
| January 05, 2022 Filed Feb 17, 2022 14:38 UTC Amendment | Koppers Holdings Inc. KOP · Entity 5058 | GrantRestricted Stock Units · Derivative | 950 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-010654 · doc4a.xml · derivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,514 Underlying: Common Stock · 950 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units represent the right to receive shares of common stock on a one-for-one basis and may be settled in cash or in shares of common stock. F2 · shares: This Form 4 amendment is being filed to correct the number of performance share units awarded to the reporting person for the three-year performance period from January 1, 2019 through December 31, 2021. F3 · derivative.exercise_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied. F3 · derivative.expiration_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the three-year performance period from January 1, 2019 through December 31, 2021 have been satisfied. F4 · balance_after: All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through March 6, 2022. Read SEC document |
| January 04, 2022 Filed Jan 6, 2022 13:41 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantEmployee Stock Options (Right to Buy) · Derivative | 5,868 | $0.00 Strike: $32.19 | $0.00 |
DisclosureSEC source: 0001209191-22-002113 · doc4.xml · derivative · entry 2 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,868 Underlying: Common Stock · 5,868 shares Expires 2032-01-04 F3 · derivative.exercise_date: The reporting person was granted stock options on January 4, 2022, which will vest in annual installments of 25 percent over four years. Read SEC document |
| January 04, 2022 Filed Jan 6, 2022 13:41 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantCommon Stock | 3,204 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-002113 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,547.8708 F1 · security: The reporting person was awarded time-based restricted stock units on January 4, 2022, which will vest in annual installments of 25 percent over four years. F2 · balance_after: Includes 736 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on June 30, 2021 and September 30, 2021. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d). Read SEC document |
| March 06, 2021 Filed Mar 9, 2021 16:13 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 153 | $35.45 | $5,423.85 |
DisclosureSEC source: 0001209191-21-018948 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,607.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| March 03, 2021 Filed Mar 5, 2021 13:31 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 861 | $35.72 | $30,754.92 |
DisclosureSEC source: 0001209191-21-018110 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,760.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| March 02, 2021 Filed Mar 4, 2021 14:05 UTC | Koppers Holdings Inc. KOP · Entity 5058 | Tax withholdingCommon Stock | 48 | $34.87 | $1,673.76 |
DisclosureSEC source: 0001209191-21-017686 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,621.8708 F1 · acquired: Shares surrendered to the issuer by the reporting person as payment for tax withholding related to the vesting of time-based restricted stock units. Read SEC document |
| February 16, 2021 Filed Feb 18, 2021 13:59 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantRestricted Stock Units · Derivative | 1,282 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-21-011675 · doc4.xml · derivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,282 Underlying: Common Stock · 1,282 shares Expires not disclosed F1 · derivative.exercise_price: Restricted stock units represent the right to receive shares of common stock on a one-for-one basis and may be settled in cash or in shares of common stock. F2 · derivative.exercise_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the two-year performance period from January 1, 2019 through December 31, 2020 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through March 6, 2022. If the Company's total shareholder return over the three-year period of January 1, 2019 through December 31, 2021 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 100% of the target number. F2 · derivative.expiration_date: On March 6, 2019, the reporting person was granted performance share units for which the performance criteria for the two-year performance period from January 1, 2019 through December 31, 2020 have been satisfied. All of the restricted stock units reported here are subject to vesting based on the continued service of the reporting person through March 6, 2022. If the Company's total shareholder return over the three-year period of January 1, 2019 through December 31, 2021 is negative, then the cumulative number of units that may vest for such three-year period will be capped at 100% of the target number. Read SEC document |
| January 04, 2021 Filed Jan 6, 2021 16:06 UTC | Koppers Holdings Inc. KOP · Entity 5058 | GrantCommon Stock | 5,026 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-21-001967 · doc4.xml · nonDerivative · entry 1 Apostolou Stephanie L · CIK 0001806249 · General Counsel & Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,669.8708 F1 · security: The reporting person was awarded time-based restricted stock units on January 4, 2021, which will vest in annual installments of 25 percent over four years. F2 · balance_after: Includes 1,278 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on March 31, 2020, June 30, 2020 and September 30, 2020. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d). 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.