Koppers Holdings (KOP)
Koppers Holdings on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as lumber & wood products (no furniture).
740K
Short interest
settlement 2026-10-15
4.8
Days to cover
+0.3 days vs prior
66.8%
Short share of volume
2026-11-02
18
Fails to deliver
settlement 2026-10-08
Fri 6 Nov
Next earnings
estimated date
-$4.9M
Insider flow, 90 days
0 buys, 7 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in KOP is 739,634 shares, down 29,441 shares over the last month. Over the last 48 readings it ranged from 296,210 shares (31 October 2024) to 1,271,306 shares (28 November 2025). At the reported average volume of 155K shares a day that is 4.8 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 739,634 | -7.7% | 154,999 | 4.77 |
| 2026-09-30 | 800,969 | +4.2% | 179,270 | 4.47 |
| 2026-09-15 | 769,075 | -19.1% | 162,060 | 4.75 |
| 2026-08-31 | 950,642 | +21.6% | 162,778 | 5.84 |
| 2026-08-14 | 781,631 | +9.6% | 253,257 | 3.09 |
| 2026-07-31 | 713,171 | -5.3% | 156,875 | 4.55 |
| 2026-07-15 | 753,012 | -8.7% | 149,425 | 5.04 |
| 2026-06-30 | 825,039 | -1.3% | 206,646 | 3.99 |
| 2026-06-15 | 836,076 | -21.6% | 168,659 | 4.96 |
| 2026-05-29 | 1,066,235 | +26.5% | 168,024 | 6.35 |
| 2026-05-15 | 842,942 | -2.2% | 227,855 | 3.70 |
| 2026-04-30 | 861,708 | +15.8% | 137,663 | 6.26 |
| 2026-04-15 | 743,863 | +4.7% | 163,242 | 4.56 |
| 2026-03-31 | 710,835 | -24.8% | 309,945 | 2.29 |
| 2026-03-13 | 945,738 | +1.3% | 302,861 | 3.12 |
| 2026-02-27 | 933,491 | -10.8% | 172,034 | 5.43 |
| 2026-02-13 | 1,046,320 | -7.7% | 172,033 | 6.08 |
| 2026-01-30 | 1,133,304 | +10.1% | 120,365 | 9.42 |
| 2026-01-15 | 1,029,377 | +21.4% | 136,926 | 7.52 |
| 2025-12-31 | 848,204 | +4.9% | 145,922 | 5.81 |
| 2025-12-15 | 808,495 | -36.4% | 131,313 | 6.16 |
| 2025-11-28 | 1,271,306 | +51.4% | 160,541 | 7.92 |
| 2025-11-14 | 839,509 | +14.0% | 189,297 | 4.43 |
| 2025-10-31 | 736,526 | +20.7% | 140,973 | 5.22 |
| 2025-10-15 | 609,991 | +3.2% | 144,512 | 4.22 |
| 2025-09-30 | 591,320 | -23.2% | 210,453 | 2.81 |
| 2025-09-15 | 769,699 | -15.0% | 170,335 | 4.52 |
| 2025-08-29 | 905,745 | +52.8% | 156,228 | 5.80 |
| 2025-08-15 | 592,610 | +22.7% | 183,871 | 3.22 |
| 2025-07-31 | 482,925 | -6.3% | 118,568 | 4.07 |
| 2025-07-15 | 515,121 | -17.2% | 136,040 | 3.79 |
| 2025-06-30 | 622,462 | -15.7% | 132,011 | 4.72 |
| 2025-06-13 | 738,743 | -21.5% | 113,561 | 6.51 |
| 2025-05-30 | 941,159 | +23.7% | 145,150 | 6.48 |
| 2025-05-15 | 760,575 | +18.4% | 179,667 | 4.23 |
| 2025-04-30 | 642,233 | +2.1% | 175,157 | 3.67 |
| 2025-04-15 | 629,120 | -0.5% | 165,196 | 3.81 |
| 2025-03-31 | 632,083 | -12.5% | 232,895 | 2.71 |
| 2025-03-14 | 722,337 | +16.8% | 213,018 | 3.39 |
| 2025-02-28 | 618,716 | +3.0% | 199,133 | 3.11 |
| 2025-02-14 | 600,443 | +15.8% | 83,782 | 7.17 |
| 2025-01-31 | 518,610 | +11.3% | 94,927 | 5.46 |
| 2025-01-15 | 466,072 | +23.1% | 136,940 | 3.40 |
| 2024-12-31 | 378,730 | -4.6% | 213,331 | 1.78 |
| 2024-12-13 | 396,864 | +13.5% | 116,593 | 3.40 |
| 2024-11-29 | 349,715 | -3.4% | 126,160 | 2.77 |
| 2024-11-15 | 362,182 | +22.3% | 130,107 | 2.78 |
| 2024-10-31 | 296,210 | +2.7% | 78,769 | 3.76 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of KOP volume is 66.8%, down 3.9 points over the last five sessions. Over the last 30 readings it ranged from 25.3% (21 October 2026) to 86.2% (24 September 2026). The latest reading is 9.0 points above the 30-session average of 57.7%, on 35K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 23K | 35K | 66.8% | 0 |
| 2026-10-30 | 15K | 30K | 51.1% | 0 |
| 2026-10-29 | 18K | 32K | 56.4% | 0 |
| 2026-10-28 | 29K | 45K | 65.3% | 214 |
| 2026-10-27 | 40K | 60K | 65.9% | 0 |
| 2026-10-26 | 21K | 30K | 70.6% | 0 |
| 2026-10-23 | 25K | 66K | 38.1% | 0 |
| 2026-10-22 | 21K | 54K | 38.2% | 0 |
| 2026-10-21 | 37K | 147K | 25.3% | 0 |
| 2026-10-20 | 15K | 34K | 44.6% | 0 |
| 2026-10-19 | 23K | 29K | 79.9% | 212 |
| 2026-10-16 | 21K | 31K | 66.6% | 0 |
| 2026-10-15 | 22K | 35K | 60.6% | 65 |
| 2026-10-14 | 20K | 31K | 64.1% | 0 |
| 2026-10-13 | 23K | 38K | 59.1% | 0 |
| 2026-10-12 | 19K | 39K | 49.6% | 0 |
| 2026-10-09 | 21K | 51K | 42.1% | 0 |
| 2026-10-08 | 30K | 56K | 54.4% | 0 |
| 2026-10-07 | 21K | 47K | 45.1% | 0 |
| 2026-10-06 | 20K | 44K | 46.4% | 0 |
| 2026-10-05 | 24K | 72K | 33.0% | 0 |
| 2026-10-02 | 34K | 81K | 42.1% | 0 |
| 2026-10-01 | 39K | 82K | 47.6% | 0 |
| 2026-09-30 | 25K | 38K | 65.5% | 0 |
| 2026-09-29 | 26K | 34K | 77.4% | 0 |
| 2026-09-28 | 20K | 27K | 75.7% | 0 |
| 2026-09-25 | 31K | 37K | 84.0% | 0 |
| 2026-09-24 | 28K | 32K | 86.2% | 2 |
| 2026-09-23 | 25K | 34K | 73.2% | 0 |
| 2026-09-22 | 36K | 62K | 57.1% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 8 October 2026, the fails-to-deliver balance in KOP is 18 shares, down 21,783 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (5 August 2026) to 23,218 shares (13 March 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-08 | 18 | $43.88 | $790 |
| 2026-09-21 | 21,801 | $45.33 | $988K |
| 2026-08-26 | 618 | $46.13 | $29K |
| 2026-08-25 | 2,292 | $45.83 | $105K |
| 2026-08-12 | 196 | $46.01 | $9K |
| 2026-08-05 | 1 | $51.99 | $52 |
| 2026-08-04 | 511 | $50.73 | $26K |
| 2026-07-23 | 169 | $51.17 | $9K |
| 2026-07-22 | 290 | $51.47 | $15K |
| 2026-07-20 | 456 | $49.14 | $22K |
| 2026-07-16 | 68 | $48.47 | $3K |
| 2026-07-06 | 206 | $46.21 | $10K |
| 2026-06-30 | 840 | $45.36 | $38K |
| 2026-06-29 | 5,630 | $45.12 | $254K |
| 2026-06-17 | 1,949 | $44.50 | $87K |
| 2026-06-15 | 1,068 | $43.41 | $46K |
| 2026-06-11 | 57 | $41.68 | $2K |
| 2026-06-05 | 145 | $42.16 | $6K |
| 2026-05-19 | 679 | $40.39 | $27K |
| 2026-04-17 | 137 | $36.98 | $5K |
| 2026-04-01 | 186 | $38.68 | $7K |
| 2026-03-17 | 12,026 | $38.39 | $462K |
| 2026-03-13 | 23,218 | $37.36 | $867K |
| 2026-03-04 | 282 | $36.73 | $10K |
| 2026-03-02 | 324 | $37.80 | $12K |
| 2026-02-27 | 1,050 | $37.24 | $39K |
| 2026-02-25 | 2 | $34.42 | $69 |
| 2026-02-24 | 33 | $33.72 | $1K |
| 2026-02-23 | 414 | $35.11 | $15K |
| 2026-02-18 | 11 | $35.07 | $386 |
Insider trades
SEC Form 4, newest first. JSONInsiders at KOP reported 7 open-market sells worth $4.9M in the last 90 days and no open-market buys. Latest filing: BALL M LEROY (CEO) on 2026-08-31.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-31 | BALL M LEROY | CEO | Gift | 200 | $0.00 | $0 | 429K |
| 2026-08-31 | BALL M LEROY | CEO | Sell | 4K | $45.96 | $184K | 430K |
| 2026-08-19 | BALL M LEROY | CEO | Sell | 3K | $45.84 | $138K | 434K |
| 2026-08-12 | Lucas Stephen G | SVP, Culture and Engagement | Sell | 1K | $44.55 | $58K | 34K |
| 2026-08-11 | Sullivan James A. | President and CTO | Sell | 8K | $50.00 | $375K | 83K |
| 2026-08-10 | Pearce Bradley A | CAO | Sell | 2K | $51.01 | $102K | 41K |
| 2026-08-07 | Sullivan James A. | President and CTO | Sell | 100 | $51.22 | $5K | 90K |
| 2026-08-07 | Sullivan James A. | President and CTO | Sell | 80K | $50.01 | $4.0M | 90K |
| 2026-06-18 | BALL M LEROY | CEO | Sell | 3K | $43.90 | $150K | 436K |
| 2026-06-11 | BALL M LEROY | CEO | Gift | 300 | $0.00 | $0 | 440K |
| 2026-06-11 | BALL M LEROY | CEO | Sell | 4K | $41.34 | $171K | 440K |
| 2026-06-03 | Feng Xudong | Director | Gift | 6K | $0.00 | $0 | 26K |
| 2026-05-26 | Brenner Eric D. | CFO and Treasurer | Grant | 7K | $0.00 | $0 | 7K |
| 2026-05-13 | BALL M LEROY | CEO | Sell | 3K | $42.55 | $113K | 444K |
| 2026-05-12 | Pearce Bradley A | Interim CFO and CAO | Grant | 5K | $0.00 | $0 | 43K |
| 2026-05-07 | Posadas Laura J | Director | Grant | 3K | $0.00 | $0 | 6K |
| 2026-05-07 | Posadas Laura J | Director | Exercise or conversion | 11 | $0.00 | $0 | 2K |
| 2026-05-07 | MOTLEY DAVID L | Director | Exercise or conversion | 50 | $0.00 | $0 | 22K |
| 2026-05-07 | Vartanian Nishan J. | Director | Grant | 3K | $0.00 | $0 | 11K |
| 2026-05-07 | Vartanian Nishan J. | Director | Exercise or conversion | 50 | $0.00 | $0 | 7K |
| 2026-05-07 | NEUPAVER ALBERT J | Director | Exercise or conversion | 50 | $0.00 | $0 | 84K |
| 2026-05-07 | JENSEN TRACI L | Director | Grant | 3K | $0.00 | $0 | 35K |
| 2026-05-07 | JENSEN TRACI L | Director | Exercise or conversion | 50 | $0.00 | $0 | 32K |
| 2026-05-07 | Feng Xudong | Director | Grant | 3K | $0.00 | $0 | 32K |
| 2026-03-17 | BALL M LEROY | CEO | Gift | 1K | $0.00 | $0 | 446K |
| 2026-03-17 | BALL M LEROY | CEO | Sell | 2K | $37.91 | $94K | 447K |
| 2026-03-02 | BALL M LEROY | CEO | Gift | 325 | $0.00 | $0 | 450K |
| 2026-03-02 | BALL M LEROY | CEO | Sell | 4K | $37.02 | $139K | 450K |
| 2026-03-02 | BALL M LEROY | CEO | Sell | 328 | $37.45 | $12K | 454K |
| 2026-03-02 | BALL M LEROY | CEO | Sell | 2K | $36.53 | $80K | 454K |
| 2026-02-26 | Lucas Stephen G | SVP, Culture and Engagement | Exercise or conversion | 127 | $0.00 | $0 | 38K |
| 2026-02-26 | Lovalekar Tushar | VP, Information Technology | Tax withholding | 1K | $37.24 | $38K | 17K |
| 2026-02-26 | Lovalekar Tushar | VP, Information Technology | Exercise or conversion | 53 | $0.00 | $0 | 18K |
| 2026-02-26 | Lovalekar Tushar | VP, Information Technology | Grant | 2K | $0.00 | $0 | 18K |
| 2026-02-26 | Lucas Stephen G | SVP, Culture and Engagement | Tax withholding | 3K | $37.24 | $94K | 36K |
| 2026-02-26 | Lucas Stephen G | SVP, Culture and Engagement | Grant | 5K | $0.00 | $0 | 38K |
| 2026-02-26 | Pearce Bradley A | Interim CFO and CAO | Tax withholding | 1K | $37.24 | $55K | 38K |
| 2026-02-26 | Pearce Bradley A | Interim CFO and CAO | Exercise or conversion | 82 | $0.00 | $0 | 40K |
| 2026-02-26 | Pearce Bradley A | Interim CFO and CAO | Grant | 3K | $0.00 | $0 | 39K |
| 2026-02-26 | Sullivan James A. | President and CTO | Tax withholding | 9K | $37.24 | $320K | 170K |
| 2026-02-26 | Sullivan James A. | President and CTO | Exercise or conversion | 466 | $0.00 | $0 | 179K |
| 2026-02-26 | Sullivan James A. | President and CTO | Grant | 19K | $0.00 | $0 | 179K |
| 2026-02-26 | BALL M LEROY | CEO | Tax withholding | 22K | $37.24 | $828K | 457K |
| 2026-02-26 | BALL M LEROY | CEO | Exercise or conversion | 1K | $0.00 | $0 | 479K |
| 2026-02-26 | BALL M LEROY | CEO | Grant | 50K | $0.00 | $0 | 478K |
| 2026-02-26 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Tax withholding | 3K | $37.24 | $117K | 63K |
| 2026-02-26 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Exercise or conversion | 174 | $0.00 | $0 | 66K |
| 2026-02-26 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Grant | 7K | $0.00 | $0 | 66K |
| 2026-02-18 | BALL M LEROY | CEO | Tax withholding | 22K | $35.06 | $781K | 428K |
| 2026-02-18 | BALL M LEROY | CEO | Exercise or conversion | 31K | $18.11 | $556K | 450K |
| 2026-02-10 | BALL M LEROY | CEO | Tax withholding | 22K | $33.20 | $738K | 419K |
| 2026-02-10 | BALL M LEROY | CEO | Exercise or conversion | 30K | $18.11 | $543K | 441K |
| 2026-01-05 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Exercise or conversion | 5K | price not stated in the filing | not stated | 64K |
| 2026-01-05 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Tax withholding | 6K | $26.93 | $155K | 59K |
| 2026-01-05 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Exercise or conversion | 240 | $0.00 | $0 | 65K |
| 2026-01-05 | BALL M LEROY | CEO | Exercise or conversion | 65K | price not stated in the filing | not stated | 449K |
| 2026-01-05 | BALL M LEROY | CEO | Exercise or conversion | 2K | $0.00 | $0 | 451K |
| 2026-01-05 | BALL M LEROY | CEO | Tax withholding | 40K | $26.93 | $1.1M | 411K |
| 2026-01-05 | Lovalekar Tushar | VP, Information Technology | Exercise or conversion | 1K | price not stated in the filing | not stated | 18K |
| 2026-01-05 | Lovalekar Tushar | VP, Information Technology | Exercise or conversion | 85 | $0.00 | $0 | 18K |
| 2026-01-05 | Lovalekar Tushar | VP, Information Technology | Tax withholding | 2K | $26.93 | $55K | 16K |
| 2026-01-05 | Lucas Stephen G | SVP, Culture and Engagement | Exercise or conversion | 3K | price not stated in the filing | not stated | 37K |
| 2026-01-05 | Lucas Stephen G | SVP, Culture and Engagement | Exercise or conversion | 156 | $0.00 | $0 | 37K |
| 2026-01-05 | Lucas Stephen G | SVP, Culture and Engagement | Tax withholding | 4K | $26.93 | $119K | 33K |
| 2026-01-05 | Smith Jimmi Sue | Chief Financial Officer | Exercise or conversion | 240 | $0.00 | $0 | 47K |
| 2026-01-05 | Smith Jimmi Sue | Chief Financial Officer | Exercise or conversion | 5K | price not stated in the filing | not stated | 47K |
| 2026-01-05 | Smith Jimmi Sue | Chief Financial Officer | Tax withholding | 6K | $26.93 | $153K | 41K |
| 2026-01-05 | Sullivan James A. | President and CTO | Exercise or conversion | 622 | $0.00 | $0 | 173K |
| 2026-01-05 | Sullivan James A. | President and CTO | Tax withholding | 14K | $26.93 | $368K | 159K |
| 2026-01-05 | Sullivan James A. | President and CTO | Exercise or conversion | 12K | price not stated in the filing | not stated | 172K |
| 2026-01-05 | Lovalekar Tushar | VP, Information Technology | Grant | 2K | $0.00 | $0 | 16K |
| 2026-01-05 | Lucas Stephen G | SVP, Culture and Engagement | Grant | 7K | $0.00 | $0 | 34K |
| 2026-01-05 | Pearce Bradley A | Chief Accounting Officer | Tax withholding | 2K | $26.93 | $67K | 36K |
| 2026-01-05 | Pearce Bradley A | Chief Accounting Officer | Exercise or conversion | 104 | $0.00 | $0 | 38K |
| 2026-01-05 | Pearce Bradley A | Chief Accounting Officer | Grant | 7K | $0.00 | $0 | 38K |
| 2026-01-05 | Sullivan James A. | President and CTO | Grant | 22K | $0.00 | $0 | 160K |
| 2026-01-05 | BALL M LEROY | CEO | Grant | 27K | $0.00 | $0 | 384K |
| 2026-01-05 | Apostolou Stephanie L | Chief Legal&Sus Officer & Sec. | Grant | 10K | $0.00 | $0 | 60K |
| 2025-11-05 | Posadas Laura J | Director | Grant | 2K | $0.00 | $0 | 2K |
| 2025-08-15 | BALL M LEROY | CEO | Sell | 2K | $30.48 | $75K | 357K |
| 2025-06-18 | BALL M LEROY | CEO | Gift | 834 | $0.00 | $0 | 359K |
| 2025-06-13 | Washington Kevin | VP, External Relations | Tax withholding | 818 | $31.91 | $26K | 8K |
| 2025-06-13 | Washington Kevin | VP, External Relations | Exercise or conversion | 33 | $0.00 | $0 | 9K |
| 2025-05-21 | BALL M LEROY | CEO | Gift | 2K | $0.00 | $0 | 360K |
| 2025-05-08 | JENSEN TRACI L | Director | Grant | 5K | $0.00 | $0 | 32K |
| 2025-05-08 | NEUPAVER ALBERT J | Director | Grant | 5K | $0.00 | $0 | 84K |
| 2025-05-08 | Vartanian Nishan J. | Director | Grant | 5K | $0.00 | $0 | 7K |
| 2025-05-08 | MOTLEY DAVID L | Director | Grant | 5K | $0.00 | $0 | 22K |
| 2025-05-02 | NEUPAVER ALBERT J | Director | Exercise or conversion | 17 | $0.00 | $0 | 79K |
| 2025-05-02 | JENSEN TRACI L | Director | Exercise or conversion | 17 | $0.00 | $0 | 27K |
| 2025-05-02 | Vartanian Nishan J. | Director | Exercise or conversion | 17 | $0.00 | $0 | 3K |
| 2025-05-02 | TESTONI LOUIS L | Director | Exercise or conversion | 17 | $0.00 | $0 | 46K |
| 2025-05-02 | Tritch Stephen R | Director | Exercise or conversion | 17 | $0.00 | $0 | 48K |
| 2025-04-11 | Lucas Stephen G | SVP, Culture and Engagement | Tax withholding | 3K | $24.91 | $68K | 27K |
| 2025-04-11 | Lucas Stephen G | SVP, Culture and Engagement | Exercise or conversion | 140 | $0.00 | $0 | 30K |
| 2025-03-19 | BALL M LEROY | CEO | Sell | 505 | $30.07 | $15K | 362K |
| 2025-03-19 | BALL M LEROY | CEO | Sell | 3K | $29.15 | $96K | 362K |
| 2025-03-07 | WILKERSON SONJA MICHELLE | Director | Returned to company | 4K | price not stated in the filing | not stated | 17K |
| 2025-02-20 | BALL M LEROY | CEO | Tax withholding | 5K | $30.58 | $138K | 365K |
| 2025-02-20 | BALL M LEROY | CEO | Exercise or conversion | 6K | $17.57 | $105K | 370K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON5 Form 144 notices on file for KOP worth $4.6M at the prices reported; 4 in the last 90 days worth $4.5M. Latest: Lucas Stephen G filed on 2026-08-12 to sell 1,308 shares ($58K) from 2026-08-12.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-12 | Lucas Stephen GOfficer | 1K | $58K | 0.007% | 2026-08-12 | Fidelity Brokerage Services LLC |
| 2026-08-11 | Sullivan James A.Officer | 8K | $375K | 0.040% | 2026-08-11 | Fidelity Brokerage Services LLC |
| 2026-08-10 | Pearce Bradley AOfficer | 2K | $102K | 0.011% | 2026-08-10 | Fidelity Brokerage Services LLC |
| 2026-08-07 | Sullivan James A.Officer | 80K | $4.0M | 0.423% | 2026-08-07 | Fidelity Brokerage Services LLC |
| 2026-03-02 | BALL M LEROYOfficer, Director | 3K | $92K | 0.013% | 2026-03-02 | Fidelity Brokerage Services LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON6 holders report 5% or more of KOP in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is BlackRock, Inc. at 15.3% of the class (2,952,521 shares), filed 2026-04-24 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-30 | 13G | Vanguard Capital Managementinvestment adviser | 954K | 5.0% | 2026-09-30 |
| 2026-10-22 | 13D/Ano. 1 | Jacobowitz Jeffreyindividual | 1.1M | 5.6% | 2026-10-20 |
| 2026-10-22 | 13D/Ano. 1 | Simcoe Capital Management, LLCother entity | 1.1M | 5.6% | 2026-10-20 |
| 2026-10-22 | 13D/Ano. 1 | SIMCOE MANAGEMENT COMPANY, LLCother entity | 1.0M | 5.4% | 2026-10-20 |
| 2026-10-22 | 13D/Ano. 1 | SIMCOE PARTNERS L Ppartnership | 873K | 4.6% | 2026-10-20 |
| 2026-10-22 | 13D/Ano. 1 | Simcoe Select, LPpartnership | 154K | 0.8% | 2026-10-20 |
| 2026-10-22 | 13D/Ano. 1 | SDR Partners, LLCother entity | 36K | 0.2% | 2026-10-20 |
| 2026-10-19 | 13G/Ano. 1 | PZENA INVESTMENT MANAGEMENT LLCinvestment adviser | 927K | 4.9% | 2026-09-30 |
| 2026-10-08 | 13G/Ano. 1 | Dimensional Fund Advisors LPinvestment adviser | 1.3M | 6.7% | 2026-09-30 |
| 2026-05-13 | 13G/Ano. 12 | Fuller & Thaler Asset Management, Inc.investment adviser | 979K | 5.0% | 2026-03-31 |
| 2026-04-24 | 13G/Ano. 6 | BlackRock, Inc.parent holding company | 3.0M | 15.3% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 8 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding KOP at their latest 13F. JSON3 of the 30 tracked managers held KOP at their latest 13F, $16.4M in total at quarter-end prices. Two Sigma Investments is the largest at $11.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Two Sigma Investments | 2026-06-30 | 266K | $11.9M | 0.01% | -151K |
| AQR Capital Management | 2026-06-30 | 78K | $3.5M | 0.00% | -17K |
| D. E. Shaw & Co. | 2026-06-30 | 20K | $919K | 0.00% | +8K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) Koppers Holdings reported revenue of $520.1M, up 3.0% from the same quarter a year earlier, and net loss of $147.5M (-7.71 diluted EPS). In FY 2025 it generated $122.5M of operating cash flow and spent $38.2M on buybacks and $6.4M on dividends.
- Debt
- $905.7M
- Equity
- $387.0M
- Total assets
- $1.72B
- Shares outstanding
- 18,911,568
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $520.1M | -$147.5M | -28.4% | -7.71 |
| Q1 FY 2026 | 2026-03-31 | $455.3M | $7.1M | 1.6% | 0.35 |
| Q4 FY 2025derived | 2025-12-31 | $432.7M | $29.7M | 6.9% | n/a |
| Q3 FY 2025 | 2025-09-30 | $485.3M | $23.8M | 4.9% | 1.17 |
| Q2 FY 2025 | 2025-06-30 | $504.8M | $16.4M | 3.2% | 0.81 |
| Q1 FY 2025 | 2025-03-31 | $456.5M | -$13.9M | -3.0% | -0.68 |
| Q4 FY 2024derived | 2024-12-31 | $477.0M | -$10.2M | -2.1% | n/a |
| Q3 FY 2024 | 2024-09-30 | $554.3M | $22.8M | 4.1% | 1.09 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $1.88B | $56.0M | $122.5M | $55.0M | $38.2M | $6.4M |
| FY 2024 | 2024-12-31 | $2.09B | $52.4M | $119.4M | $77.4M | $50.8M | $5.9M |
| FY 2023 | 2023-12-31 | $2.15B | $89.2M | $146.1M | $120.5M | $20.1M | $5.0M |
| FY 2022 | 2022-12-31 | $1.98B | $63.4M | $102.3M | $105.3M | $23.6M | $4.2M |
| FY 2021 | 2021-12-31 | $1.68B | $85.2M | $103.0M | $125.0M | $11.5M | $0 |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-31 from the cover page.
What this page is
Koppers Holdings in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Koppers Holdings (KOP), SEC CIK 1315257, listed on NYSE, classified by the SEC as lumber & wood products (no furniture). The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-08.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-12.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-30.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-31.JSON and CSV
- Company record
- EDGAR filing index for CIK 1315257Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of KOP is sold short?
739,634 shares were held short at the 2026-10-15 settlement, 4.8 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is KOP's daily short volume?
On 2026-11-02, 23,151 of the 34,677 KOP shares reported to FINRA were sold short, 66.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does KOP have fails to deliver?
The SEC's latest file shows 18 KOP shares failed to deliver at settlement 2026-10-08. Fails are reported per settlement date and published twice a month with a lag.
Are KOP insiders buying or selling?
Insiders at KOP reported 7 open-market sells worth $4.9M in the last 90 days and no open-market buys. Latest filing: BALL M LEROY (CEO) on 2026-08-31.
Have KOP insiders filed to sell?
5 Form 144 notices on file for KOP worth $4.6M at the prices reported; 4 in the last 90 days worth $4.5M. Latest: Lucas Stephen G filed on 2026-08-12 to sell 1,308 shares ($58K) from 2026-08-12.
Who owns 5% or more of KOP?
6 holders report 5% or more of KOP in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is BlackRock, Inc. at 15.3% of the class (2,952,521 shares), filed 2026-04-24 for an event on 2026-03-31.
What did KOP report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Koppers Holdings reported revenue of $520.1M, up 3.0% from the same quarter a year earlier, and net loss of $147.5M (-7.71 diluted EPS). In FY 2025 it generated $122.5M of operating cash flow and spent $38.2M on buybacks and $6.4M on dividends.
Which tracked 13F managers own KOP?
3 of the 30 tracked 13F managers held KOP shares at their latest filing, $16.4M in all. The largest: Two Sigma Investments (266K shares, $11.9M), Cliff Asness's AQR Capital Management (78K shares, $3.5M), D. E. Shaw & Co. (20K shares, $919K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.