Enpro (NPO)
Enpro 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 gaskets, packg & sealg devices & rubber & plastics hose.
512K
Short interest
settlement 2026-10-15
2.7
Days to cover
-0.4 days vs prior
53.3%
Short share of volume
2026-11-02
41
Fails to deliver
settlement 2026-10-05
Tue 3 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 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 NPO is 512,208 shares, down 42,697 shares over the last month. Over the last 48 readings it ranged from 277,099 shares (15 November 2024) to 760,634 shares (30 May 2025). At the reported average volume of 193K shares a day that is 2.7 days to cover.
Embed this chart.The embed keeps its attribution line.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 512,208 | -5.8% | 192,737 | 2.66 |
| 2026-09-30 | 543,566 | -2.0% | 177,461 | 3.06 |
| 2026-09-15 | 554,905 | +12.0% | 141,824 | 3.91 |
| 2026-08-31 | 495,435 | +7.6% | 144,425 | 3.43 |
| 2026-08-14 | 460,510 | +2.9% | 206,539 | 2.23 |
| 2026-07-31 | 447,413 | +5.8% | 219,922 | 2.03 |
| 2026-07-15 | 422,814 | -7.2% | 275,033 | 1.54 |
| 2026-06-30 | 455,532 | +21.8% | 448,083 | 1.02 |
| 2026-06-15 | 374,045 | -1.4% | 194,356 | 1.92 |
| 2026-05-29 | 379,436 | +6.8% | 185,649 | 2.04 |
| 2026-05-15 | 355,334 | +6.0% | 243,575 | 1.46 |
| 2026-04-30 | 335,310 | -6.3% | 243,509 | 1.38 |
| 2026-04-15 | 357,965 | -7.5% | 309,924 | 1.16 |
| 2026-03-31 | 386,857 | +9.3% | 239,875 | 1.61 |
| 2026-03-13 | 353,791 | +13.2% | 219,306 | 1.61 |
| 2026-02-27 | 312,673 | -18.0% | 238,852 | 1.31 |
| 2026-02-13 | 381,301 | -9.4% | 261,502 | 1.46 |
| 2026-01-30 | 420,850 | -6.7% | 165,565 | 2.54 |
| 2026-01-15 | 450,920 | +2.8% | 171,847 | 2.62 |
| 2025-12-31 | 438,526 | -9.3% | 207,622 | 2.11 |
| 2025-12-15 | 483,433 | -4.2% | 151,445 | 3.19 |
| 2025-11-28 | 504,845 | +1.5% | 168,075 | 3.00 |
| 2025-11-14 | 497,522 | +29.0% | 213,550 | 2.33 |
| 2025-10-31 | 385,545 | -9.3% | 192,577 | 2.00 |
| 2025-10-15 | 425,001 | +2.5% | 222,107 | 1.91 |
| 2025-09-30 | 414,506 | -7.5% | 145,532 | 2.85 |
| 2025-09-15 | 448,202 | -6.2% | 92,910 | 4.82 |
| 2025-08-29 | 478,011 | -0.3% | 114,736 | 4.17 |
| 2025-08-15 | 479,216 | +15.8% | 152,319 | 3.15 |
| 2025-07-31 | 413,799 | -6.0% | 109,307 | 3.79 |
| 2025-07-15 | 440,419 | -9.3% | 116,472 | 3.78 |
| 2025-06-30 | 485,439 | -19.4% | 156,837 | 3.10 |
| 2025-06-13 | 602,578 | -20.8% | 141,955 | 4.24 |
| 2025-05-30 | 760,634 | +85.3% | 157,667 | 4.82 |
| 2025-05-15 | 410,447 | -10.2% | 150,152 | 2.73 |
| 2025-04-30 | 456,789 | -6.6% | 154,561 | 2.96 |
| 2025-04-15 | 489,084 | -16.4% | 146,273 | 3.34 |
| 2025-03-31 | 585,344 | +0.5% | 153,567 | 3.81 |
| 2025-03-14 | 582,559 | +23.6% | 127,517 | 4.57 |
| 2025-02-28 | 471,221 | +7.6% | 167,238 | 2.82 |
| 2025-02-14 | 437,908 | +14.2% | 99,655 | 4.39 |
| 2025-01-31 | 383,349 | +6.7% | 98,635 | 3.89 |
| 2025-01-15 | 359,270 | -3.7% | 91,026 | 3.95 |
| 2024-12-31 | 372,941 | -12.3% | 105,835 | 3.52 |
| 2024-12-13 | 425,487 | +17.8% | 163,637 | 2.60 |
| 2024-11-29 | 361,319 | +30.4% | 132,574 | 2.73 |
| 2024-11-15 | 277,099 | -11.2% | 138,782 | 2.00 |
| 2024-10-31 | 312,060 | -7.5% | 72,516 | 4.30 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of NPO volume is 53.3%, up 12.4 points over the last five sessions. Over the last 30 readings it ranged from 23.6% (27 October 2026) to 77.7% (22 September 2026). The latest reading is in line with the 30-session average of 51.7%, on 64K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 34K | 64K | 53.3% | 0 |
| 2026-10-30 | 24K | 41K | 59.3% | 0 |
| 2026-10-29 | 20K | 48K | 42.4% | 0 |
| 2026-10-28 | 15K | 55K | 27.8% | 0 |
| 2026-10-27 | 25K | 104K | 23.6% | 0 |
| 2026-10-26 | 35K | 85K | 41.0% | 1 |
| 2026-10-23 | 31K | 83K | 37.3% | 1,297 |
| 2026-10-22 | 74K | 153K | 48.4% | 396 |
| 2026-10-21 | 31K | 79K | 39.9% | 0 |
| 2026-10-20 | 34K | 84K | 40.8% | 0 |
| 2026-10-19 | 34K | 61K | 56.4% | 56 |
| 2026-10-16 | 40K | 67K | 60.2% | 0 |
| 2026-10-15 | 41K | 149K | 27.7% | 21 |
| 2026-10-14 | 26K | 64K | 39.9% | 0 |
| 2026-10-13 | 24K | 63K | 37.3% | 0 |
| 2026-10-12 | 18K | 32K | 56.7% | 4 |
| 2026-10-09 | 22K | 34K | 66.6% | 3 |
| 2026-10-08 | 31K | 51K | 61.9% | 503 |
| 2026-10-07 | 28K | 56K | 50.2% | 10 |
| 2026-10-06 | 29K | 66K | 43.4% | 0 |
| 2026-10-05 | 54K | 80K | 67.3% | 111 |
| 2026-10-02 | 67K | 95K | 70.0% | 0 |
| 2026-10-01 | 22K | 36K | 59.8% | 8 |
| 2026-09-30 | 20K | 40K | 49.9% | 0 |
| 2026-09-29 | 18K | 41K | 44.7% | 0 |
| 2026-09-28 | 23K | 43K | 53.6% | 0 |
| 2026-09-25 | 58K | 79K | 73.7% | 0 |
| 2026-09-24 | 42K | 58K | 72.4% | 0 |
| 2026-09-23 | 24K | 35K | 68.8% | 0 |
| 2026-09-22 | 42K | 54K | 77.7% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 5 October 2026, the fails-to-deliver balance in NPO is 41 shares, up 10 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (3 June 2026) to 9,059 shares (29 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-05 | 41 | $332.56 | $14K |
| 2026-08-18 | 31 | $346.33 | $11K |
| 2026-07-31 | 107 | $312.95 | $33K |
| 2026-07-30 | 97 | $296.12 | $29K |
| 2026-07-10 | 609 | $330.28 | $201K |
| 2026-07-02 | 367 | $360.78 | $132K |
| 2026-07-01 | 836 | $376.93 | $315K |
| 2026-06-30 | 50 | $372.50 | $19K |
| 2026-06-29 | 9,059 | $379.26 | $3.4M |
| 2026-06-24 | 39 | $367.37 | $14K |
| 2026-06-23 | 450 | $387.65 | $174K |
| 2026-06-17 | 19 | $358.19 | $7K |
| 2026-06-03 | 2 | $316.20 | $632 |
| 2026-06-02 | 615 | $305.54 | $188K |
| 2026-05-22 | 431 | $302.86 | $131K |
| 2026-05-15 | 297 | $323.30 | $96K |
| 2026-05-08 | 34 | $300.76 | $10K |
| 2026-05-07 | 9 | $306.42 | $3K |
| 2026-05-05 | 13 | $289.51 | $4K |
| 2026-04-27 | 1,486 | $294.49 | $438K |
| 2026-04-23 | 355 | $283.80 | $101K |
| 2026-04-22 | 301 | $282.00 | $85K |
| 2026-04-16 | 179 | $265.72 | $48K |
| 2026-04-15 | 7 | $278.15 | $2K |
| 2026-04-09 | 8 | $273.80 | $2K |
| 2026-04-01 | 7 | $250.65 | $2K |
| 2026-03-31 | 9 | $240.45 | $2K |
| 2026-03-20 | 48 | $250.71 | $12K |
| 2026-03-19 | 740 | $250.59 | $185K |
| 2026-03-17 | 50 | $247.34 | $12K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for NPO in the last 90 days. The most recent filings are listed below. Latest filing: Bianchi Amy (EVP and CHRO) on 2026-09-15.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | Bianchi Amy | EVP and CHRO | Tax withholding | 189 | $283.94 | $54K | 335 |
| 2026-09-15 | Bianchi Amy | EVP and CHRO | Exercise or conversion | 524 | $0.00 | $0 | 524 |
| 2026-03-02 | Bower Steven R. | SVP, Controller and CAO | Sell | 507 | $265.15 | $134K | 5K |
| 2026-03-02 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 2K | $53.78 | $83K | 5K |
| 2026-02-25 | Humphrey John | Director | Sell | 1K | $268.69 | $349K | 3K |
| 2026-02-24 | McLean Robert Savage | EVP, GC, and CAO | Sell | 2K | $277.50 | $555K | 30K |
| 2026-02-23 | Brueck Felix M. | Director | Sell | 5K | $275.69 | $1.3M | 2K |
| 2026-02-23 | Brueck Felix M. | Director | Sell | 1K | $276.52 | $285K | 6K |
| 2026-02-16 | Vaillancourt Eric A. | President and CEO | Tax withholding | 7K | $272.63 | $2.0M | 51K |
| 2026-02-16 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 4K | $0.00 | $0 | 59K |
| 2026-02-16 | Vaillancourt Eric A. | President and CEO | Grant | 13K | $0.00 | $0 | 55K |
| 2026-02-16 | McLean Robert Savage | EVP, GC, and CAO | Tax withholding | 1K | $272.63 | $353K | 32K |
| 2026-02-16 | McLean Robert Savage | EVP, GC, and CAO | Exercise or conversion | 774 | $0.00 | $0 | 33K |
| 2026-02-16 | McLean Robert Savage | EVP, GC, and CAO | Grant | 3K | $0.00 | $0 | 32K |
| 2026-02-16 | Joiner Larisa R. | SVP and CIO | Tax withholding | 473 | $272.63 | $129K | 9K |
| 2026-02-16 | Joiner Larisa R. | SVP and CIO | Exercise or conversion | 256 | $0.00 | $0 | 10K |
| 2026-02-16 | Joiner Larisa R. | SVP and CIO | Grant | 854 | $0.00 | $0 | 10K |
| 2026-02-16 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 365 | $272.63 | $100K | 4K |
| 2026-02-16 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 280 | $0.00 | $0 | 4K |
| 2026-02-16 | Bower Steven R. | SVP, Controller and CAO | Grant | 935 | $0.00 | $0 | 4K |
| 2026-02-15 | Vaillancourt Eric A. | President and CEO | Tax withholding | 1K | $272.63 | $360K | 41K |
| 2026-02-15 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 3K | $0.00 | $0 | 43K |
| 2026-02-15 | McLean Robert Savage | EVP, GC, and CAO | Tax withholding | 217 | $272.63 | $59K | 30K |
| 2026-02-15 | McLean Robert Savage | EVP, GC, and CAO | Exercise or conversion | 601 | $0.00 | $0 | 30K |
| 2026-02-15 | Joiner Larisa R. | SVP and CIO | Tax withholding | 120 | $272.63 | $33K | 9K |
| 2026-02-15 | Joiner Larisa R. | SVP and CIO | Exercise or conversion | 249 | $0.00 | $0 | 9K |
| 2026-02-15 | Bruderek Joseph F Jr. | EVP and CFO | Tax withholding | 176 | $272.63 | $48K | 1K |
| 2026-02-15 | Bruderek Joseph F Jr. | EVP and CFO | Exercise or conversion | 616 | $0.00 | $0 | 1K |
| 2026-02-15 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 57 | $272.63 | $16K | 3K |
| 2026-02-15 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 217 | $0.00 | $0 | 3K |
| 2026-02-13 | Joiner Larisa R. | SVP and CIO | Tax withholding | 105 | $271.21 | $28K | 9K |
| 2026-02-13 | Joiner Larisa R. | SVP and CIO | Exercise or conversion | 219 | $0.00 | $0 | 9K |
| 2026-02-13 | McLean Robert Savage | EVP, GC, and CAO | Tax withholding | 193 | $271.21 | $52K | 29K |
| 2026-02-13 | McLean Robert Savage | EVP, GC, and CAO | Exercise or conversion | 534 | $0.00 | $0 | 30K |
| 2026-02-13 | Vaillancourt Eric A. | President and CEO | Tax withholding | 1K | $271.21 | $346K | 39K |
| 2026-02-13 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 3K | $0.00 | $0 | 41K |
| 2026-02-13 | Bruderek Joseph F Jr. | EVP and CFO | Tax withholding | 211 | $271.21 | $57K | 856 |
| 2026-02-13 | Bruderek Joseph F Jr. | EVP and CFO | Exercise or conversion | 656 | $0.00 | $0 | 1K |
| 2026-02-13 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 50 | $271.21 | $14K | 3K |
| 2026-02-13 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 191 | $0.00 | $0 | 3K |
| 2026-02-12 | Reinsdorf Judith A | Director | Grant | 567 | $246.91 | $140K | 4K |
| 2026-02-12 | Humphrey John | Director | Grant | 567 | $246.91 | $140K | 4K |
| 2026-02-12 | HAUSER DAVID L | Director | Grant | 184 | $246.91 | $45K | 4K |
| 2026-02-12 | Gulfo Adele M. | Director | Grant | 567 | $246.91 | $140K | 5K |
| 2026-02-12 | Brueck Felix M. | Director | Grant | 567 | $246.91 | $140K | 7K |
| 2026-02-12 | Botts Thomas M. | Director | Grant | 567 | $246.91 | $140K | 10K |
| 2026-02-12 | Abbey William | Director | Grant | 567 | $246.91 | $140K | 3K |
| 2026-02-12 | ADEN ALLISON | Director | Grant | 567 | $246.91 | $140K | 1K |
| 2025-11-07 | Vaillancourt Eric A. | President and CEO | Gift | 442 | $0.00 | $0 | 38K |
| 2025-11-06 | Vaillancourt Eric A. | President and CEO | Sell | 2K | $227.00 | $516K | 38K |
| 2025-08-22 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 3K | $53.78 | $134K | 3K |
| 2025-08-20 | McLean Robert Savage | EVP, GC, and CAO | Sell | 3K | $223.77 | $569K | 29K |
| 2025-08-12 | McLean Robert Savage | EVP, GC, and CAO | Gift | 230 | $0.00 | $0 | 32K |
| 2025-08-07 | Vaillancourt Eric A. | President and CEO | Tax withholding | 2K | $215.50 | $500K | 40K |
| 2025-08-07 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 938 | $106.54 | $100K | 43K |
| 2025-08-07 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 1K | $80.00 | $100K | 42K |
| 2025-08-07 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 6K | $53.78 | $300K | 40K |
| 2025-08-07 | McLean Robert Savage | EVP, GC, and CAO | Tax withholding | 924 | $215.50 | $199K | 32K |
| 2025-08-07 | McLean Robert Savage | EVP, GC, and CAO | Exercise or conversion | 4K | $53.78 | $199K | 33K |
| 2025-02-25 | Bower Steven R. | SVP, Controller and CAO | Sell | 997 | $199.66 | $199K | 0 |
| 2025-02-24 | Vaillancourt Eric A. | President and CEO | Gift | 499 | $0.00 | $0 | 35K |
| 2025-02-16 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 278 | $0.00 | $0 | 1K |
| 2025-02-16 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 74 | $192.96 | $14K | 997 |
| 2025-02-16 | Joiner Larisa R. | VP and CIO | Tax withholding | 113 | $192.96 | $22K | 9K |
| 2025-02-16 | Joiner Larisa R. | VP and CIO | Exercise or conversion | 254 | $0.00 | $0 | 9K |
| 2025-02-16 | McLean Robert Savage | EVP, GC, CAO & Secretary | Exercise or conversion | 772 | $0.00 | $0 | 29K |
| 2025-02-16 | McLean Robert Savage | EVP, GC, CAO & Secretary | Tax withholding | 299 | $192.96 | $58K | 29K |
| 2025-02-16 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 4K | $0.00 | $0 | 37K |
| 2025-02-16 | Vaillancourt Eric A. | President and CEO | Tax withholding | 2K | $192.96 | $319K | 35K |
| 2025-02-15 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 294 | $0.00 | $0 | 721 |
| 2025-02-15 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 217 | $0.00 | $0 | 938 |
| 2025-02-15 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 145 | $192.96 | $28K | 793 |
| 2025-02-15 | Joiner Larisa R. | VP and CIO | Exercise or conversion | 273 | $0.00 | $0 | 8K |
| 2025-02-15 | Joiner Larisa R. | VP and CIO | Tax withholding | 252 | $192.96 | $49K | 8K |
| 2025-02-15 | Joiner Larisa R. | VP and CIO | Exercise or conversion | 248 | $0.00 | $0 | 9K |
| 2025-02-15 | McLean Robert Savage | EVP, GC, CAO & Secretary | Exercise or conversion | 601 | $0.00 | $0 | 29K |
| 2025-02-15 | McLean Robert Savage | EVP, GC, CAO & Secretary | Tax withholding | 610 | $192.96 | $118K | 29K |
| 2025-02-15 | McLean Robert Savage | EVP, GC, CAO & Secretary | Exercise or conversion | 942 | $0.00 | $0 | 29K |
| 2025-02-15 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 3K | $0.00 | $0 | 36K |
| 2025-02-15 | Vaillancourt Eric A. | President and CEO | Exercise or conversion | 4K | $0.00 | $0 | 33K |
| 2025-02-15 | Vaillancourt Eric A. | President and CEO | Tax withholding | 3K | $192.96 | $578K | 33K |
| 2025-02-15 | Bruderek Joseph F Jr. | EVP and CFO | Tax withholding | 205 | $192.96 | $40K | 411 |
| 2025-02-15 | Bruderek Joseph F Jr. | EVP and CFO | Exercise or conversion | 616 | $0.00 | $0 | 616 |
| 2025-02-13 | Abbey William | Director | Grant | 685 | $182.27 | $125K | 3K |
| 2025-02-13 | ADEN ALLISON | Director | Grant | 685 | $182.27 | $125K | 812 |
| 2025-02-13 | Botts Thomas M. | Director | Grant | 685 | $182.27 | $125K | 9K |
| 2025-02-13 | Brueck Felix M. | Director | Grant | 685 | $182.27 | $125K | 7K |
| 2025-02-13 | HAUSER DAVID L | Director | Grant | 685 | $182.27 | $125K | 4K |
| 2025-02-13 | Humphrey John | Director | Grant | 685 | $182.27 | $125K | 4K |
| 2025-02-13 | Reinsdorf Judith A | Director | Grant | 685 | $182.27 | $125K | 3K |
| 2025-01-02 | Bower Steven R. | SVP, Controller and CAO | Tax withholding | 45 | $172.45 | $8K | 427 |
| 2025-01-02 | Bower Steven R. | SVP, Controller and CAO | Exercise or conversion | 342 | $0.00 | $0 | 472 |
| 2024-12-05 | HAUSER DAVID L | Director | Gift | 500 | $0.00 | $0 | 3K |
| 2024-11-14 | Bower Steven R. | SVP, Controller and CAO | Gift | 174 | $0.00 | $0 | 430 |
| 2024-11-14 | Bower Steven R. | SVP, Controller and CAO | Sell | 300 | $162.50 | $49K | 130 |
| 2024-11-12 | HAUSER DAVID L | Director | Gift | 1K | $0.00 | $0 | 4K |
| 2024-11-08 | McLean Robert Savage | EVP, GC, CAO & Secretary | Gift | 620 | $0.00 | $0 | 28K |
| 2024-11-05 | ADEN ALLISON | Director | Grant | 127 | $153.15 | $19K | 127 |
| 2024-08-09 | Bower Steven R. | SVP, Controller and CAO | Sell | 2K | $150.06 | $232K | 604 |
| 2024-05-17 | Bower Steven R. | SVP, Controller and CAO | Sell | 1K | $150.00 | $155K | 2K |
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 NPO worth $3.2M at the prices reported; 0 in the last 90 days worth $0. Latest: Bower Steven R. filed on 2026-03-02 to sell 507 shares ($134K) from 2026-03-02.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-03-02 | Bower Steven R.Officer | 507 | $134K | 0.002% | 2026-03-02 | Charles Schwab & Co., Inc. |
| 2026-02-25 | Humphrey JohnDirector | 1K | $363K | 0.006% | 2026-02-25 | Fidelity Brokerage Services LLC |
| 2026-02-24 | McLean Robert SavageOfficer | 2K | $555K | 0.009% | 2026-02-24 | Charles Schwab & Co., Inc. |
| 2026-02-23 | Brueck Felix M.Director | 6K | $1.6M | 0.028% | 2026-02-23 | Fidelity Brokernge Seivices LLC |
| 2025-11-07 | Vaillancourt Eric A.Officer, Director | 2K | $516K | 0.011% | 2025-11-06 | Charles Schwab & Co., Inc. |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON2 holders report 5% or more of NPO in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 6.3% of the class (1,339,604 shares), filed 2026-04-29 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 1.3M | 6.3% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 1.1M | 5.2% | 2026-03-31 |
| 2026-04-22 | 13G/Ano. 1 | Wasatch Advisors LPinvestment adviser | 910K | 4.3% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 14 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding NPO at their latest 13F. JSON5 of the 30 tracked managers held NPO at their latest 13F, $66.9M in total at quarter-end prices. Two Sigma Investments is the largest at $47.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Two Sigma Investments | 2026-06-30 | 126K | $47.5M | 0.03% | +96K |
| D. E. Shaw & Co. | 2026-06-30 | 20K | $7.5M | 0.00% | +5K |
| AQR Capital Management | 2026-06-30 | 14K | $5.1M | 0.00% | +5K |
| Citadel Advisors | 2026-06-30 | 14K | $5.1M | 0.00% | +5K |
| Renaissance Technologies | 2026-06-30 | 4K | $1.7M | 0.00% | -46K |
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 FY 2025 it reported and spent $26.2M on dividends. As of 2026-06-30, cash was $77.0M against $575.3M of debt.
- Cash
- $77.0M
- Debt
- $575.3M
- Equity
- $1.59B
- Total assets
- $2.66B
- Shares outstanding
- 21,167,681
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | n/a | $27.1M | n/a | 1.27 |
| Q1 FY 2026 | 2026-03-31 | n/a | $27.4M | n/a | 1.29 |
| Q4 FY 2025derived | 2025-12-31 | n/a | -$32.0M | n/a | n/a |
| Q3 FY 2025 | 2025-09-30 | n/a | $21.6M | n/a | 1.01 |
| Q2 FY 2025 | 2025-06-30 | n/a | $26.4M | n/a | 1.25 |
| Q1 FY 2025 | 2025-03-31 | n/a | $24.5M | n/a | 1.15 |
| Q4 FY 2024derived | 2024-12-31 | n/a | $13.9M | n/a | n/a |
| Q3 FY 2024 | 2024-09-30 | n/a | $19.8M | n/a | 0.94 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | n/a | $40.5M | n/a | $42.0M | n/a | $26.2M |
| FY 2024 | 2024-12-31 | $1.05B | $72.9M | n/a | $29.1M | n/a | $25.3M |
| FY 2023 | 2023-12-31 | $1.06B | $22.2M | n/a | $33.9M | n/a | $24.3M |
| FY 2022 | 2022-12-31 | $1.10B | $205.1M | n/a | $29.4M | n/a | $23.4M |
| FY 2021 | 2021-12-31 | n/a | $177.9M | n/a | $14.9M | $0 | $22.4M |
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 2026-07-23 from the cover page.
What this page is
Enpro 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 Enpro (NPO), SEC CIK 1164863, listed on NYSE, classified by the SEC as gaskets, packg & sealg devices & rubber & plastics hose. 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 2026-10-05.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 2026-03-02.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 2026-04-29.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 2026-08-04.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 2026-09-15.JSON and CSV
- Company record
- EDGAR filing index for CIK 1164863Ticker, 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 NPO is sold short?
512,208 shares were held short at the 2026-10-15 settlement, 2.7 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 NPO's daily short volume?
On 2026-11-02, 34,323 of the 64,348 NPO shares reported to FINRA were sold short, 53.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does NPO have fails to deliver?
The SEC's latest file shows 41 NPO shares failed to deliver at settlement 2026-10-05. Fails are reported per settlement date and published twice a month with a lag.
Are NPO insiders buying or selling?
No open-market insider trades were reported for NPO in the last 90 days. The most recent filings are listed below. Latest filing: Bianchi Amy (EVP and CHRO) on 2026-09-15.
Have NPO insiders filed to sell?
5 Form 144 notices on file for NPO worth $3.2M at the prices reported; 0 in the last 90 days worth $0. Latest: Bower Steven R. filed on 2026-03-02 to sell 507 shares ($134K) from 2026-03-02.
Who owns 5% or more of NPO?
2 holders report 5% or more of NPO in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 6.3% of the class (1,339,604 shares), filed 2026-04-29 for an event on 2026-03-31.
What did NPO report last quarter?
In FY 2025 it reported and spent $26.2M on dividends. As of 2026-06-30, cash was $77.0M against $575.3M of debt.
Which tracked 13F managers own NPO?
5 of the 30 tracked 13F managers held NPO shares at their latest filing, $66.9M in all. The largest: Two Sigma Investments (126K shares, $47.5M), D. E. Shaw & Co. (20K shares, $7.5M), Cliff Asness's AQR Capital Management (14K shares, $5.1M), Ken Griffin's Citadel Advisors (14K shares, $5.1M), Renaissance Technologies (4K shares, $1.7M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.