Perimeter Solutions (PRM)
Perimeter Solutions on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as chemicals & allied products.
6.5M
Short interest
settlement 2026-09-30
4.3
Days to cover
-2.7 days vs prior
49.5%
Short share of volume
2026-10-23
38,280
Fails to deliver
settlement 2026-09-21
Thu 29 Oct
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in PRM is 6,541,508 shares, up 349,549 shares over the last month. Over the last 48 readings it ranged from 1,080,209 shares (29 November 2024) to 7,004,455 shares (15 September 2026). The latest reading sits at the top of that range. At the reported average volume of 1.5M shares a day that is 4.3 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 6,541,508 | -6.6% | 1,521,331 | 4.30 |
| 2026-09-15 | 7,004,455 | +13.1% | 1,008,520 | 6.95 |
| 2026-08-31 | 6,191,959 | +5.0% | 1,087,432 | 5.69 |
| 2026-08-14 | 5,898,317 | +17.0% | 1,567,023 | 3.76 |
| 2026-07-31 | 5,039,463 | +7.1% | 1,814,592 | 2.78 |
| 2026-07-15 | 4,706,692 | -9.6% | 1,222,233 | 3.85 |
| 2026-06-30 | 5,207,323 | +8.1% | 2,666,759 | 1.95 |
| 2026-06-15 | 4,816,571 | +21.9% | 1,428,529 | 3.37 |
| 2026-05-29 | 3,951,379 | +16.7% | 1,200,639 | 3.29 |
| 2026-05-15 | 3,384,759 | +13.3% | 1,788,938 | 1.89 |
| 2026-04-30 | 2,986,279 | -8.4% | 1,054,718 | 2.83 |
| 2026-04-15 | 3,259,656 | -6.4% | 1,065,877 | 3.06 |
| 2026-03-31 | 3,481,578 | -4.9% | 1,209,949 | 2.88 |
| 2026-03-13 | 3,659,542 | +10.9% | 1,232,128 | 2.97 |
| 2026-02-27 | 3,298,537 | -6.8% | 1,103,219 | 2.99 |
| 2026-02-13 | 3,539,038 | -12.1% | 853,555 | 4.15 |
| 2026-01-30 | 4,025,024 | +11.6% | 838,544 | 4.80 |
| 2026-01-15 | 3,608,393 | +13.2% | 835,386 | 4.32 |
| 2025-12-31 | 3,188,992 | +22.1% | 840,289 | 3.80 |
| 2025-12-15 | 2,611,965 | -4.4% | 966,635 | 2.70 |
| 2025-11-28 | 2,733,117 | -17.1% | 997,513 | 2.74 |
| 2025-11-14 | 3,296,106 | -9.1% | 1,139,641 | 2.89 |
| 2025-10-31 | 3,624,374 | -6.3% | 1,641,581 | 2.21 |
| 2025-10-15 | 3,867,691 | +3.0% | 825,038 | 4.69 |
| 2025-09-30 | 3,753,523 | -2.1% | 1,092,085 | 3.44 |
| 2025-09-15 | 3,833,318 | -4.7% | 1,333,480 | 2.87 |
| 2025-08-29 | 4,024,087 | +3.3% | 1,437,806 | 2.80 |
| 2025-08-15 | 3,894,113 | -12.7% | 1,266,136 | 3.08 |
| 2025-07-31 | 4,458,113 | -2.9% | 1,001,195 | 4.45 |
| 2025-07-15 | 4,588,737 | -11.7% | 1,325,799 | 3.46 |
| 2025-06-30 | 5,194,344 | +11.4% | 1,223,751 | 4.24 |
| 2025-06-13 | 4,661,516 | +12.9% | 920,080 | 5.07 |
| 2025-05-30 | 4,129,353 | +10.3% | 1,046,910 | 3.94 |
| 2025-05-15 | 3,743,367 | +10.8% | 1,023,137 | 3.66 |
| 2025-04-30 | 3,379,912 | +13.2% | 838,873 | 4.03 |
| 2025-04-15 | 2,986,618 | +3.3% | 1,234,363 | 2.42 |
| 2025-03-31 | 2,891,508 | -10.8% | 1,607,982 | 1.80 |
| 2025-03-14 | 3,239,712 | -2.4% | 1,076,378 | 3.01 |
| 2025-02-28 | 3,319,077 | +17.8% | 1,309,429 | 2.53 |
| 2025-02-14 | 2,817,117 | +19.6% | 782,774 | 3.60 |
| 2025-01-31 | 2,354,519 | -11.6% | 1,062,942 | 2.22 |
| 2025-01-15 | 2,663,789 | -14.3% | 1,653,343 | 1.61 |
| 2024-12-31 | 3,108,837 | +102.4% | 1,391,532 | 2.23 |
| 2024-12-13 | 1,535,804 | +42.2% | 670,892 | 2.29 |
| 2024-11-29 | 1,080,209 | -35.3% | 1,045,997 | 1.03 |
| 2024-11-15 | 1,669,714 | -23.1% | 1,239,627 | 1.35 |
| 2024-10-31 | 2,171,423 | -4.5% | 441,584 | 4.92 |
| 2024-10-15 | 2,273,031 | +2.0% | 647,877 | 3.51 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of PRM volume is 49.5%, down 1.4 points over the last five sessions. Over the last 30 readings it ranged from 24.5% (30 September 2026) to 83.7% (17 September 2026). The latest reading is 12.9 points below the 30-session average of 62.5%, on 506K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 251K | 506K | 49.5% | 579 |
| 2026-10-22 | 236K | 403K | 58.5% | 1,656 |
| 2026-10-21 | 198K | 303K | 65.2% | 28 |
| 2026-10-20 | 177K | 278K | 63.7% | 0 |
| 2026-10-19 | 288K | 443K | 64.9% | 600 |
| 2026-10-16 | 284K | 557K | 50.9% | 42 |
| 2026-10-15 | 195K | 304K | 64.2% | 0 |
| 2026-10-14 | 326K | 446K | 73.0% | 0 |
| 2026-10-13 | 131K | 280K | 46.7% | 3 |
| 2026-10-12 | 159K | 283K | 56.4% | 0 |
| 2026-10-09 | 122K | 208K | 58.6% | 0 |
| 2026-10-08 | 311K | 411K | 75.5% | 0 |
| 2026-10-07 | 258K | 528K | 48.9% | 0 |
| 2026-10-06 | 315K | 420K | 74.9% | 0 |
| 2026-10-05 | 290K | 380K | 76.5% | 0 |
| 2026-10-02 | 294K | 507K | 58.0% | 1,143 |
| 2026-10-01 | 374K | 614K | 61.0% | 0 |
| 2026-09-30 | 349K | 1.4M | 24.5% | 0 |
| 2026-09-29 | 291K | 512K | 56.8% | 0 |
| 2026-09-28 | 111K | 219K | 50.6% | 0 |
| 2026-09-25 | 302K | 462K | 65.4% | 0 |
| 2026-09-24 | 421K | 997K | 42.2% | 0 |
| 2026-09-23 | 237K | 394K | 60.3% | 11 |
| 2026-09-22 | 248K | 446K | 55.5% | 2,724 |
| 2026-09-21 | 254K | 334K | 75.9% | 6 |
| 2026-09-18 | 272K | 332K | 82.0% | 133 |
| 2026-09-17 | 336K | 402K | 83.7% | 0 |
| 2026-09-16 | 281K | 410K | 68.4% | 0 |
| 2026-09-15 | 256K | 325K | 78.8% | 0 |
| 2026-09-14 | 272K | 328K | 82.9% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 21 September 2026, the fails-to-deliver balance in PRM is 38,280 shares, up 38,024 shares over the last settlement date. Over the last 30 readings it ranged from 7 shares (4 August 2026) to 95,395 shares (11 March 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-21 | 38,280 | $32.18 | $1.2M |
| 2026-09-18 | 256 | $32.18 | $8K |
| 2026-09-16 | 56,444 | $31.56 | $1.8M |
| 2026-09-15 | 205 | $31.21 | $6K |
| 2026-09-08 | 2,740 | $31.76 | $87K |
| 2026-08-28 | 2,251 | $32.03 | $72K |
| 2026-08-27 | 26 | $31.16 | $810 |
| 2026-08-06 | 318 | $34.97 | $11K |
| 2026-08-04 | 7 | $30.50 | $214 |
| 2026-08-03 | 2,159 | $30.61 | $66K |
| 2026-07-30 | 481 | $34.67 | $17K |
| 2026-07-27 | 471 | $33.73 | $16K |
| 2026-07-20 | 134 | $34.42 | $5K |
| 2026-07-16 | 119 | $33.53 | $4K |
| 2026-07-06 | 298 | $33.92 | $10K |
| 2026-07-01 | 12,131 | $35.65 | $432K |
| 2026-06-29 | 26 | $34.40 | $894 |
| 2026-06-22 | 1,778 | $37.78 | $67K |
| 2026-06-12 | 48 | $35.05 | $2K |
| 2026-06-09 | 85 | $31.08 | $3K |
| 2026-06-08 | 13 | $30.16 | $392 |
| 2026-05-26 | 655 | $31.10 | $20K |
| 2026-05-18 | 37,274 | $33.23 | $1.2M |
| 2026-05-14 | 300 | $33.91 | $10K |
| 2026-05-13 | 31,392 | $32.10 | $1.0M |
| 2026-05-05 | 10 | $29.74 | $297 |
| 2026-04-27 | 282 | $30.85 | $9K |
| 2026-04-24 | 119 | $30.91 | $4K |
| 2026-03-31 | 1,777 | $21.28 | $38K |
| 2026-03-11 | 95,395 | $23.44 | $2.2M |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for PRM in the last 90 days. The most recent filings are listed below. Latest filing: WINDACRE PARTNERSHIP LLC (TenPercentOwner) on 2026-06-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 1.9M | $33.90 | $63.6M | 16.1M |
| 2026-06-29 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 438K | $33.00 | $14.4M | 18.0M |
| 2026-06-26 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 20K | $36.25 | $725K | 19.0M |
| 2026-06-26 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 548K | $34.51 | $18.9M | 18.5M |
| 2026-06-26 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 2.3M | $34.40 | $79.0M | 19.0M |
| 2026-06-26 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 150K | $34.98 | $5.2M | 21.3M |
| 2026-06-26 | WINDACRE PARTNERSHIP LLC | TenPercentOwner | Sell | 379K | $36.22 | $13.7M | 21.5M |
| 2026-05-22 | Khouri Haitham | Chief Executive Officer | Sell | 118K | $31.19 | $3.7M | 1.9M |
| 2026-05-21 | Khouri Haitham | Chief Executive Officer | Sell | 92K | $31.91 | $2.9M | 2.0M |
| 2026-05-20 | Khouri Haitham | Chief Executive Officer | Sell | 20K | $34.09 | $692K | 2.1M |
| 2026-05-13 | Sable Kyle | Chief Financial Officer | Sell | 3K | $33.59 | $110K | 0 |
| 2026-05-13 | Sable Kyle | Chief Financial Officer | Sell | 46K | $33.05 | $1.5M | 3K |
| 2026-05-13 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 50K | $8.36 | $414K | 50K |
| 2026-05-13 | Emery Jeffrey | President - Global Fire Safety | Sell | 54K | $33.45 | $1.8M | 0 |
| 2026-05-13 | Emery Jeffrey | President - Global Fire Safety | Exercise or conversion | 54K | $8.36 | $448K | 54K |
| 2026-05-12 | Sable Kyle | Chief Financial Officer | Sell | 30K | $31.75 | $953K | 0 |
| 2026-05-12 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 30K | $8.36 | $251K | 30K |
| 2026-05-11 | Sable Kyle | Chief Financial Officer | Sell | 20K | $32.89 | $673K | 0 |
| 2026-05-11 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 20K | $8.36 | $171K | 20K |
| 2026-05-11 | Emery Jeffrey | President - Global Fire Safety | Sell | 2K | $34.05 | $72K | 0 |
| 2026-05-11 | Emery Jeffrey | President - Global Fire Safety | Sell | 98K | $32.90 | $3.2M | 2K |
| 2026-05-11 | Emery Jeffrey | President - Global Fire Safety | Exercise or conversion | 100K | $8.36 | $836K | 100K |
| 2026-05-08 | Sable Kyle | Chief Financial Officer | Sell | 150K | $31.52 | $4.7M | 0 |
| 2026-05-08 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 130K | $8.36 | $1.1M | 150K |
| 2026-05-08 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 20K | $3.89 | $78K | 20K |
| 2026-05-08 | Emery Jeffrey | President - Global Fire Safety | Sell | 47K | $32.00 | $1.5M | 0 |
| 2026-05-08 | Emery Jeffrey | President - Global Fire Safety | Exercise or conversion | 47K | $8.36 | $389K | 47K |
| 2026-04-23 | Howley W Nicholas | Director | Gift | 3.5M | $0.00 | $0 | 606K |
| 2026-04-01 | Howley W Nicholas | Director | Gift | 1.0M | $0.00 | $0 | 4.1M |
| 2026-03-11 | Thorndike William N Jr | Director | Sell | 100K | $23.18 | $2.3M | 8.5M |
| 2026-03-10 | Thorndike William N Jr | Director | Sell | 100K | $23.63 | $2.4M | 8.6M |
| 2026-03-09 | Thorndike William N Jr | Director | Sell | 35K | $23.85 | $834K | 8.7M |
| 2026-03-09 | Thorndike William N Jr | Director | Sell | 90K | $23.18 | $2.1M | 8.8M |
| 2026-03-06 | Thorndike William N Jr | Director | Sell | 100K | $23.63 | $2.4M | 8.9M |
| 2026-03-05 | Thorndike William N Jr | Director | Sell | 100K | $24.06 | $2.4M | 9.0M |
| 2026-03-04 | Thorndike William N Jr | Director | Sell | 125K | $24.26 | $3.0M | 9.1M |
| 2026-03-03 | Raj Vivek | Director | Grant | 556K | $0.00 | $0 | 678K |
| 2026-03-03 | Thorndike William N Jr | Director | Grant | 5.6M | $0.00 | $0 | 9.2M |
| 2026-03-03 | Khouri Haitham | Chief Executive Officer | Grant | 1.6M | $0.00 | $0 | 2.1M |
| 2026-03-03 | Howley W Nicholas | Director | Gift | 1.1M | $0.00 | $0 | 5.1M |
| 2026-03-03 | Howley W Nicholas | Director | Grant | 5.6M | $0.00 | $0 | 6.2M |
| 2026-03-03 | Cool Tracy Britt | Director | Grant | 66K | $0.00 | $0 | 250K |
| 2025-12-12 | Sable Kyle | Chief Financial Officer | Sell | 100K | $28.47 | $2.8M | 0 |
| 2025-12-12 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 100K | $8.36 | $836K | 100K |
| 2025-12-12 | Yokozuka Noriko | General Counsel | Sell | 138K | $28.44 | $3.9M | 47K |
| 2025-12-12 | Yokozuka Noriko | General Counsel | Exercise or conversion | 120K | $10.00 | $1.2M | 185K |
| 2025-12-12 | Yokozuka Noriko | General Counsel | Exercise or conversion | 18K | $10.00 | $175K | 65K |
| 2025-12-09 | Thorndike William N Jr | Director | Gift | 674K | $0.00 | $0 | 3.6M |
| 2025-11-24 | Howley W Nicholas | Director | Gift | 747K | $0.00 | $0 | 606K |
| 2025-09-11 | Raj Vivek | Director | Sell | 25K | $22.45 | $561K | 122K |
| 2025-09-05 | Sable Kyle | Chief Financial Officer | Sell | 40K | $22.05 | $882K | 0 |
| 2025-09-05 | Sable Kyle | Chief Financial Officer | Exercise or conversion | 40K | $3.89 | $156K | 40K |
| 2025-09-04 | Emery Jeffrey | President - Global Fire Safety | Sell | 300K | $22.28 | $6.7M | 0 |
| 2025-09-04 | Emery Jeffrey | President - Global Fire Safety | Exercise or conversion | 300K | $8.36 | $2.5M | 300K |
| 2025-06-27 | WAPGP LLC | TenPercentOwner | Buy | 255K | $13.98 | $3.6M | 21.9M |
| 2025-06-27 | WindAcre Partnership Master Fund, LP | 10% owner | Buy | 255K | $13.98 | $3.6M | 21.9M |
| 2025-06-20 | Raj Vivek | Director | Other transaction | 79K | $0.00 | $0 | 147K |
| 2025-06-20 | Thorndike William N Jr | Director | Other transaction | 747K | $0.00 | $0 | 4.3M |
| 2025-06-20 | Khouri Haitham | Chief Executive Officer | Other transaction | 254K | $0.00 | $0 | 504K |
| 2025-06-20 | Howley W Nicholas | Director | Other transaction | 747K | $0.00 | $0 | 1.4M |
| 2025-06-20 | Cool Tracy Britt | Director | Other transaction | 11K | $0.00 | $0 | 185K |
| 2025-05-21 | Raj Vivek | Director | Sell | 32K | $11.70 | $374K | 68K |
| 2025-05-20 | Raj Vivek | Director | Sell | 69K | $11.84 | $815K | 100K |
| 2025-05-19 | Raj Vivek | Director | Sell | 100K | $11.78 | $1.2M | 169K |
| 2025-05-16 | Raj Vivek | Director | Sell | 100K | $11.74 | $1.2M | 269K |
| 2025-05-15 | Raj Vivek | Director | Sell | 100K | $11.92 | $1.2M | 369K |
| 2025-05-13 | Raj Vivek | Director | Sell | 2K | $12.22 | $28K | 469K |
| 2025-03-14 | Raj Vivek | Director | Sell | 250K | $9.17 | $2.3M | 471K |
| 2024-11-22 | Cool Tracy Britt | Director | Sell | 50K | $12.81 | $641K | 173K |
| 2024-11-15 | Khouri Haitham | Chief Executive Officer | Sell | 80K | $12.16 | $975K | 250K |
| 2024-11-14 | Khouri Haitham | Chief Executive Officer | Sell | 100K | $12.17 | $1.2M | 330K |
| 2024-11-13 | Khouri Haitham | Chief Executive Officer | Sell | 80K | $12.05 | $964K | 430K |
| 2024-11-12 | Raj Vivek | Director | Returned to company | 22K | $13.83 | $300K | 721K |
| 2024-11-12 | Raj Vivek | Director | Exercise or conversion | 25K | $12.00 | $300K | 743K |
| 2024-11-06 | Khouri Haitham | Chief Executive Officer | Exercise or conversion | 93K | $12.00 | $1.1M | 342K |
| 2024-11-06 | Khouri Haitham | Chief Executive Officer | Returned to company | 82K | $13.48 | $1.1M | 260K |
| 2024-11-06 | Thorndike William N Jr | Director | Exercise or conversion | 125K | $12.00 | $1.5M | 3.5M |
| 2024-10-29 | Iversen Bernt G II | Director | Returned to company | 29K | $12.76 | $375K | 127K |
| 2024-10-29 | Iversen Bernt G II | Director | Exercise or conversion | 31K | $12.00 | $375K | 156K |
| 2024-10-21 | Howley W Nicholas | Director | Returned to company | 114K | $13.15 | $1.5M | 606K |
| 2024-10-21 | Howley W Nicholas | Director | Exercise or conversion | 125K | $12.00 | $1.5M | 720K |
| 2024-10-16 | Henderson Robert S | Director | Exercise (in or at the money) | 3K | price not stated in the filing | not stated | 328K |
| 2024-10-16 | Cool Tracy Britt | Director | Exercise (in or at the money) | 315 | price not stated in the filing | not stated | 223K |
| 2024-10-16 | Henderson Robert S | Director | Exercise or conversion | 81K | $12.00 | $975K | 406K |
| 2024-10-16 | Henderson Robert S | Director | Returned to company | 78K | $12.53 | $975K | 328K |
| 2024-10-16 | Cool Tracy Britt | Director | Returned to company | 7K | $12.53 | $90K | 223K |
| 2024-10-16 | Cool Tracy Britt | Director | Exercise or conversion | 8K | $12.00 | $90K | 231K |
| 2024-08-02 | Khouri Haitham | Chief Executive Officer | Gift | 1.2M | $0.00 | $0 | 250K |
| 2024-08-02 | Khouri Haitham | Chief Executive Officer | Gift | 1.2M | $0.00 | $0 | 1.2M |
| 2024-06-11 | Valladares Jorge | Director | Buy | 14K | $7.15 | $100K | 14K |
| 2024-06-11 | Valladares Jorge | Director | Buy | 14K | $7.15 | $100K | 14K |
| 2024-06-11 | Valladares Jorge | Director | Buy | 14K | $7.15 | $100K | 14K |
| 2024-05-15 | Howley W Nicholas | Director | Gift | 1.4M | $0.00 | $0 | 595K |
| 2024-05-14 | Khouri Haitham | Chief Executive Officer | Gift | 250K | $0.00 | $0 | 510K |
| 2024-05-14 | Khouri Haitham | Chief Executive Officer | Gift | 250K | $0.00 | $0 | 0 |
| 2024-03-14 | Cool Tracy Britt | Director | Other transaction | 40K | $0.00 | $0 | 223K |
| 2024-03-14 | Howley W Nicholas | Director | Other transaction | 668K | $0.00 | $0 | 2.0M |
| 2024-03-14 | Raj Vivek | Director | Other transaction | 134K | $0.00 | $0 | 718K |
| 2024-03-14 | Khouri Haitham | Chief Executive Officer | Other transaction | 250K | $0.00 | $0 | 250K |
| 2024-03-14 | Thorndike William N Jr | Director | Other transaction | 668K | $0.00 | $0 | 3.4M |
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. JSON15 Form 144 notices on file for PRM worth $74.6M at the prices reported; 0 in the last 90 days worth $0. Latest: KYLE J SABLE filed on 2026-05-13 to sell 49,540 shares ($1.6M) from 2026-05-13.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-13 | KYLE J SABLEOfficer, Director | 50K | $1.6M | 0.030% | 2026-05-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-13 | JEFFREY EMERYOfficer | 54K | $1.8M | 0.033% | 2026-05-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-12 | KYLE J SABLEOfficer, Director | 30K | $952K | 0.018% | 2026-05-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-11 | KYLE J SABLEOfficer, Director | 20K | $673K | 0.013% | 2026-05-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-11 | JEFFREY EMERYOfficer | 100K | $3.3M | 0.061% | 2026-05-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-08 | KYLE J SABLEOfficer, Director | 150K | $4.7M | 0.092% | 2026-05-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-08 | JEFFREY EMERYOfficer | 47K | $1.5M | 0.029% | 2026-05-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-12 | Cromwell Harbor Supporting FoundationFoundation of Director | 115K | $2.7M | 0.077% | 2026-03-12 | UBS Financial Services Inc |
| 2026-03-05 | William ThorndikeDirector | 525K | $12.5M | 0.351% | 2026-03-05 | UBS Financial Services Inc |
| 2026-03-04 | William ThorndikeDirector | 125K | $3.0M | 0.084% | 2026-03-04 | UBS Financial Services Inc |
| 2026-02-27 | EDWARD GOLDBERGOfficer, Director | 300K | $7.0M | 0.201% | 2026-02-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-12 | NORIKO YOKOZUKAOfficer, Director | 138K | $3.9M | 0.093% | 2025-12-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-12 | KYLE J SABLEOfficer, Director | 100K | $2.8M | 0.068% | 2025-12-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-03 | EDWARD GOLDBERGOfficer, Director | 452K | $10.8M | 0.306% | 2025-11-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-31 | EDWARD GOLDBERGOfficer, Director | 736K | $17.4M | 0.497% | 2025-10-31 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON8 holders report 5% or more of PRM in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is The WindAcre Partnership LLC at 9.9% of the class (16,148,621 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 3 | The WindAcre Partnership LLCinvestment adviser | 16.1M | 9.9% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | The WindAcre Partnership Master Fund, LPpartnership | 16.1M | 9.9% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Snehal Rajnikant Aminindividual | 16.1M | 9.9% | 2026-06-30 |
| 2026-08-05 | 13G/Ano. 3 | PRINCIPAL GLOBAL INVESTORSinvestment adviser | 13.4M | 8.2% | 2026-06-30 |
| 2026-08-05 | 13G/Ano. 3 | PRINCIPAL FUNDS, INC.investment company | 9.2M | 5.6% | 2026-06-30 |
| 2026-03-26 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-03-10 | 13D | William N. Thorndike, Jr.individual | 9.3M | 5.7% | 2026-03-03 |
| 2025-11-05 | 13G | FMR LLCparent holding company | 9.8M | 6.7% | 2025-09-30 |
| 2025-11-05 | 13G | Abigail P. Johnsonindividual | 9.8M | 6.7% | 2025-09-30 |
13F holders
Tracked managers holding PRM at their latest 13F. JSON3 of the 30 tracked managers held PRM at their latest 13F, $32.2M in total at quarter-end prices. AQR Capital Management is the largest at $17.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 0 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 490K | $17.5M | 0.01% | -84K |
| Citadel Advisors | 2026-06-30 | 288K | $10.3M | 0.00% | -42K |
| Renaissance Technologies | 2026-06-30 | 126K | $4.5M | 0.01% | -465K |
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.
What this page is
Perimeter Solutions 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 Perimeter Solutions (PRM), SEC CIK 1880319, listed on NYSE, classified by the SEC as chemicals & allied products. 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 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-21.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 2026-05-13.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 2026-08-14.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
- 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 2026-07-31.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 2026-06-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 1880319Ticker, 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.
Other companies the SEC classifies as chemicals & allied products
Other company pages
Datasets
Frequently Asked Questions
How much of PRM is sold short?
6,541,508 shares were held short at the 2026-09-30 settlement, 4.3 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 PRM's daily short volume?
On 2026-10-23, 250,633 of the 506,184 PRM shares reported to FINRA were sold short, 49.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does PRM have fails to deliver?
The SEC's latest file shows 38,280 PRM shares failed to deliver at settlement 2026-09-21. Fails are reported per settlement date and published twice a month with a lag.
Are PRM insiders buying or selling?
No open-market insider trades were reported for PRM in the last 90 days. The most recent filings are listed below. Latest filing: WINDACRE PARTNERSHIP LLC (TenPercentOwner) on 2026-06-30.
Have PRM insiders filed to sell?
15 Form 144 notices on file for PRM worth $74.6M at the prices reported; 0 in the last 90 days worth $0. Latest: KYLE J SABLE filed on 2026-05-13 to sell 49,540 shares ($1.6M) from 2026-05-13.
Who owns 5% or more of PRM?
8 holders report 5% or more of PRM in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is The WindAcre Partnership LLC at 9.9% of the class (16,148,621 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own PRM?
3 of the 30 tracked 13F managers held PRM shares at their latest filing, $32.2M in all. The largest: Cliff Asness's AQR Capital Management (490K shares, $17.5M), Ken Griffin's Citadel Advisors (288K shares, $10.3M), Renaissance Technologies (126K shares, $4.5M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.