PRMPerimeter Solutions, Inc.as of 2026-09-16
Horizon

Issued 2026-09-16 at $31.90 · now $31.90 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, PRM has typically landed between $25.76 and $40.33 — a range of −19.2% to +26.4% from the issuance price $31.90.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

1,184 overlapping 1 month windows · 2021-11-09 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($31.90) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.

Where PRM has typically landed a month from the 2026-09-16 close of $31.9 — the range is history, not a prediction.

$25.76worst · -19.2%$40.33best · +26.4%
  • now $31.9 (+0.0%)
  • typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $32.22 (+1.0%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $28.92–$35.51
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $25.76–$40.33
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 1,184 windows spanning 2021-11-09 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
StartReturnMax dropMax rise
3 worst
2023-09-14−44.9%−44.9%+0.0%
2023-09-15−44.0%−44.9%+0.0%
2023-09-20−42.8%−42.8%+0.0%
3 best
2022-11-03+51.3%+0.0%+53.6%
2023-11-01+51.0%+0.0%+51.0%
2023-11-02+47.6%+0.0%+50.0%

1,184 overlapping windows · 2021-11-09 – 2026-09-16 · not cherry-picked

Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.

iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~5 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.
Jan
40%
−1.6%
n=5
Feb
20%
−2.0%
n=5
Mar
40%
+2.5%
n=5
Apr
40%
−0.9%
n=5
May
80%
+2.9%
n=5
Jun
80%
+8.3%
n=5
Jul
60%
+6.4%
n=5
Aug
60%
+8.0%
n=5
Sep
40%
−4.3%
n=5
Oct
25%
−6.5%
n=4
Nov
75%
+20.2%
n=4
Dec
40%
+2.3%
n=5

Up-frequency and average month-over-month return · historical frequency, not a prediction

Reported insider & political trades

Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$38$182026-06-30: 1 insider sale, $63.6M — WINDACRE PARTNERSHIP LLC2026-06-29: 1 insider sale, $14.4M — WINDACRE PARTNERSHIP LLC2026-06-26: 5 insider sales, $117.6M — WINDACRE PARTNERSHIP LLC …2026-05-22: 1 insider sale, $3.7M — Khouri Haitham2026-05-21: 1 insider sale, $2.9M — Khouri Haitham2026-05-20: 1 insider sale, $692K — Khouri Haitham2026-05-13: 3 insider sales, $3.4M — Emery Jeffrey, Sable Kyle …2026-05-12: 1 insider sale, $953K — Sable Kyle2026-05-11: 3 insider sales, $4.0M — Emery Jeffrey, Sable Kyle …2026-05-08: 2 insider sales, $6.2M — Sable Kyle, Emery Jeffrey2026-03-11: 1 insider sale, $2.3M — Thorndike William N Jr2026-03-10: 1 insider sale, $2.4M — Thorndike William N Jr2026-03-09: 2 insider sales, $2.9M — Thorndike William N Jr …2026-03-06: 1 insider sale, $2.4M — Thorndike William N Jr2026-03-05: 1 insider sale, $2.4M — Thorndike William N Jr2026-03-04: 1 insider sale, $3.0M — Thorndike William N Jr2025-12-12: 2 insider sales, $6.8M — Yokozuka Noriko, Sable Kyle2025-09-11: 1 insider sale, $561K — Raj Vivek2025-09-05: 1 insider sale, $882K — Sable Kyle2025-09-04: 1 insider sale, $6.7M — Emery Jeffrey2025-09: 3 open-market sales, $8.1M2025-12: 2 open-market sales, $6.8M2026-03: 7 open-market sales, $15.4M2026-05: 12 open-market sales, $21.8M2026-06: 7 open-market sales, $195.6M↑ buys↓ salestenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-30, filed same daytenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-29, filed 1 day after the tradetenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-26, filed 4 days after the tradetenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-26, filed 4 days after the tradetenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-26, filed 4 days after the tradetenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-26, filed 4 days after the tradetenPercentOwner WINDACRE PARTNERSHIP LLC — Sale on 2026-06-26, filed 4 days after the tradedirector Khouri Haitham — Sale on 2026-05-22, filed same daydirector Khouri Haitham — Sale on 2026-05-21, filed 1 day after the tradedirector Khouri Haitham — Sale on 2026-05-20, filed 2 days after the tradeofficer Emery Jeffrey — Sale on 2026-05-13, filed 2 days after the tradeofficer Sable Kyle — Sale on 2026-05-13, filed 2 days after the tradeofficer Sable Kyle — Sale on 2026-05-13, filed 2 days after the tradeofficer Sable Kyle — Sale on 2026-05-12, filed same dayofficer Emery Jeffrey — Sale on 2026-05-11, filed 1 day after the tradeofficer Sable Kyle — Sale on 2026-05-11, filed 1 day after the tradeofficer Emery Jeffrey — Sale on 2026-05-11, filed 1 day after the tradeofficer Sable Kyle — Sale on 2026-05-08, filed 4 days after the tradeofficer Emery Jeffrey — Sale on 2026-05-08, filed 4 days after the tradedirector Thorndike William N Jr — Sale on 2026-03-11, filed same daydirector Thorndike William N Jr — Sale on 2026-03-10, filed 1 day after the tradedirector Thorndike William N Jr — Sale on 2026-03-09, filed 2 days after the tradedirector Thorndike William N Jr — Sale on 2026-03-09, filed 2 days after the tradedirector Thorndike William N Jr — Sale on 2026-03-06, filed same daydirector Thorndike William N Jr — Sale on 2026-03-05, filed 1 day after the tradedirector Thorndike William N Jr — Sale on 2026-03-04, filed 2 days after the tradeofficer Yokozuka Noriko — Sale on 2025-12-12, filed 4 days after the tradeofficer Sable Kyle — Sale on 2025-12-12, filed 4 days after the tradedirector Raj Vivek — Sale on 2025-09-11, filed 4 days after the tradeofficer Sable Kyle — Sale on 2025-09-05, filed 3 days after the tradeofficer Emery Jeffrey — Sale on 2025-09-04, filed 4 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-06-30WINDACRE PARTNERSHIP LLCtenPercentOwnerSale1,875,000 @ $33.90$63.6M−10.4% of holding−12.1%not yet — horizon still open16,148,621Form 4 · filed same day
2026-06-29WINDACRE PARTNERSHIP LLCtenPercentOwnerSale437,500 @ $33.00$14.4M−2.4% of holding−1.2%not yet — horizon still open18,023,621Form 4 · filed 1 day after the trade
2026-06-26WINDACRE PARTNERSHIP LLCtenPercentOwnerSale2,296,400 @ $34.40$79.0M−10.8% of holding−8.5%not yet — horizon still open19,029,600Form 4 · filed 4 days after the trade
2026-06-26WINDACRE PARTNERSHIP LLCtenPercentOwnerSale548,479 @ $34.51$18.9M−2.9% of holding−8.5%not yet — horizon still open18,461,121Form 4 · filed 4 days after the trade
2026-06-26WINDACRE PARTNERSHIP LLCtenPercentOwnerSale378,600 @ $36.22$13.7M−1.7% of holding−8.5%not yet — horizon still open21,476,000Form 4 · filed 4 days after the trade
2026-06-26WINDACRE PARTNERSHIP LLCtenPercentOwnerSale150,000 @ $34.98$5.2M−0.7% of holding−8.5%not yet — horizon still open21,326,000Form 4 · filed 4 days after the trade
2026-06-26WINDACRE PARTNERSHIP LLCtenPercentOwnerSale20,000 @ $36.25$725K−0.1% of holding−8.5%not yet — horizon still open19,009,600Form 4 · filed 4 days after the trade
2026-05-22Khouri HaithamdirectorSale117,511 @ $31.19$3.7M−5.9% of holding+16.3%not yet — horizon still open1,874,615Form 4 · filed same day
2026-05-21Khouri HaithamdirectorSale91,724 @ $31.91$2.9M−4.4% of holding+15.0%not yet — horizon still open1,992,126Form 4 · filed 1 day after the trade
2026-05-20Khouri HaithamdirectorSale20,300 @ $34.09$692K−1.0% of holding+11.0%not yet — horizon still open2,083,850Form 4 · filed 2 days after the trade
2026-05-13Emery JeffreyofficerSale53,537 @ $33.45$1.8M−100.0% of holding+4.7%not yet — horizon still open0Form 4 · filed 2 days after the trade
2026-05-13Sable KyleofficerSale46,263 @ $33.05$1.5M−93.4% of holding+4.7%not yet — horizon still open3,277Form 4 · filed 2 days after the trade
2026-05-13Sable KyleofficerSale3,277 @ $33.59$110K−100.0% of holding+4.7%not yet — horizon still open0Form 4 · filed 2 days after the trade
2026-05-12Sable KyleofficerSale30,000 @ $31.75$953K−100.0% of holding+9.2%not yet — horizon still open0Form 4 · filed same day
2026-05-11Emery JeffreyofficerSale97,855 @ $32.90$3.2M−97.9% of holding+7.0%not yet — horizon still open2,108Form 4 · filed 1 day after the trade
2026-05-11Sable KyleofficerSale20,460 @ $32.89$673K−100.0% of holding+7.0%not yet — horizon still open0Form 4 · filed 1 day after the trade
2026-05-11Emery JeffreyofficerSale2,108 @ $34.05$72K−100.0% of holding+7.0%not yet — horizon still open0Form 4 · filed 1 day after the trade
2026-05-08Sable KyleofficerSale150,000 @ $31.52$4.7M−100.0% of holding+3.2%not yet — horizon still open0Form 4 · filed 4 days after the trade
2026-05-08Emery JeffreyofficerSale46,500 @ $32.00$1.5M−100.0% of holding+3.2%not yet — horizon still open0Form 4 · filed 4 days after the trade
2026-03-11Thorndike William N JrdirectorSale100,000 @ $23.18$2.3M−1.2% of holding+8.7%not yet — horizon still open8,535,656Form 4 · filed same day
2026-03-10Thorndike William N JrdirectorSale100,000 @ $23.63$2.4M−1.1% of holding+6.1%not yet — horizon still open8,635,656Form 4 · filed 1 day after the trade
2026-03-09Thorndike William N JrdirectorSale90,043 @ $23.18$2.1M−1.0% of holding+6.2%not yet — horizon still open8,770,613Form 4 · filed 2 days after the trade
2026-03-09Thorndike William N JrdirectorSale34,957 @ $23.85$834K−0.4% of holding+6.2%not yet — horizon still open8,735,656Form 4 · filed 2 days after the trade
2026-03-06Thorndike William N JrdirectorSale100,000 @ $23.63$2.4M−1.1% of holding+4.4%not yet — horizon still open8,860,656Form 4 · filed same day
2026-03-05Thorndike William N JrdirectorSale100,000 @ $24.06$2.4M−1.1% of holding+5.3%not yet — horizon still open8,960,656Form 4 · filed 1 day after the trade
2026-03-04Thorndike William N JrdirectorSale125,000 @ $24.26$3.0M−1.4% of holding+10.0%not yet — horizon still open9,060,656Form 4 · filed 2 days after the trade
2025-12-12Yokozuka NorikoofficerSale137,500 @ $28.44$3.9M−74.5% of holding−1.7%+17.8%47,157Form 4 · filed 4 days after the trade
2025-12-12Sable KyleofficerSale100,000 @ $28.47$2.8M−100.0% of holding−1.7%+17.8%0Form 4 · filed 4 days after the trade
2025-09-11Raj VivekdirectorSale25,000 @ $22.45$561K−17.0% of holding−4.1%+1.2%121,701Form 4 · filed 4 days after the trade
2025-09-05Sable KyleofficerSale40,000 @ $22.05$882K−100.0% of holding−1.7%+1.1%0Form 4 · filed 3 days after the trade
2025-09-04Emery JeffreyofficerSale300,000 @ $22.28$6.7M−100.0% of holding−3.2%+1.4%0Form 4 · filed 4 days after the trade
2025-06-27WindAcre Partnership Master Fund, LPtenPercentOwnerPurchase254,600 @ $13.98$3.6M+1.2% of holding+13.2%+88.0%21,854,600Form 4 · filed 4 days after the trade
2025-06-27WindAcre Partnership Master Fund, LPtenPercentOwnerSale254,600 @ $13.98$3.6M−100.0% of holding+13.2%+88.0%0Form 4 · filed 4 days after the trade
2025-05-21Raj VivekdirectorSale32,000 @ $11.70$374K−32.0% of holding+14.3%+108.3%68,132Form 4 · filed 2 days after the trade
2025-05-20Raj VivekdirectorSale68,810 @ $11.84$815K−40.7% of holding+11.7%+105.4%100,132Form 4 · filed same day
2025-05-19Raj VivekdirectorSale100,000 @ $11.78$1.2M−37.2% of holding+11.6%+104.3%168,942Form 4 · filed 1 day after the trade
2025-05-16Raj VivekdirectorSale100,000 @ $11.74$1.2M−27.1% of holding+9.9%+99.3%268,942Form 4 · filed 4 days after the trade
2025-05-15Raj VivekdirectorSale100,000 @ $11.92$1.2M−21.3% of holding+8.6%+99.9%368,942Form 4 · filed same day
2025-05-13Raj VivekdirectorSale2,284 @ $12.22$28K−0.5% of holding+7.5%+94.3%468,942Form 4 · filed 2 days after the trade
2025-03-14Raj VivekdirectorSale250,000 @ $9.17$2.3M−34.7% of holding+12.2%+125.0%471,226Form 4 · filed 3 days after the trade

The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.

106 award / exercise / gift records — not counted as purchases

Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.

DatePersonRoleActionSharesOwned afterFiling
2026-05-13Emery JeffreyofficerOption exercise53,53753,537Form 4
2026-05-13Sable KyleofficerOption exercise49,54049,540Form 4
2026-05-13Emery JeffreyofficerOption exercise53,537300,000Form 4
2026-05-13Sable KyleofficerOption exercise49,54070,000Form 4
2026-05-12Sable KyleofficerOption exercise30,00030,000Form 4
2026-05-12Sable KyleofficerOption exercise30,000119,540Form 4
2026-05-11Emery JeffreyofficerOption exercise99,96399,963Form 4
2026-05-11Sable KyleofficerOption exercise20,46020,460Form 4
2026-05-11Emery JeffreyofficerOption exercise99,963353,537Form 4
2026-05-11Sable KyleofficerOption exercise20,460149,540Form 4
2026-05-08Sable KyleofficerOption exercise130,000150,000Form 4
2026-05-08Emery JeffreyofficerOption exercise46,50046,500Form 4
2026-05-08Sable KyleofficerOption exercise20,00020,000Form 4
2026-05-08Emery JeffreyofficerOption exercise46,500453,500Form 4
2026-05-08Sable KyleofficerOption exercise130,000170,000Form 4
2026-05-08Sable KyleofficerOption exercise20,0000Form 4
2026-04-23Howley W NicholasdirectorGift3,480,640606,200Form 4
2026-04-01Howley W NicholasdirectorGift1,000,0004,086,840Form 4
2026-03-03Cool Tracy BrittdirectorAward / grant65,843250,493Form 4
2026-03-03Raj VivekdirectorAward / grant555,859677,560Form 4
2026-03-03Khouri HaithamdirectorAward / grant1,600,3172,104,150Form 4
2026-03-03Thorndike William N JrdirectorAward / grant5,582,4929,185,656Form 4
2026-03-03Howley W NicholasdirectorGift1,101,8525,086,840Form 4
2026-03-03Howley W NicholasdirectorAward / grant5,582,4926,188,692Form 4
2026-02-26HENNESSY SEAN PdirectorAward / grant6,1946,194Form 4
2026-02-26Cool Tracy BrittdirectorAward / grant6,1946,194Form 4
2026-02-26Cool Tracy BrittdirectorAward / grant7,00014,000Form 4
2026-02-26Cool Tracy BrittdirectorAward / grant7,00021,000Form 4
2026-02-26Cool Tracy BrittdirectorAward / grant7,00028,000Form 4
2026-02-26Cool Tracy BrittdirectorAward / grant1,7507,000Form 4
2026-02-26Henderson Robert SdirectorAward / grant6,1946,194Form 4
2026-02-26Henderson Robert SdirectorAward / grant7,00014,000Form 4
2026-02-26Henderson Robert SdirectorAward / grant7,00021,000Form 4
2026-02-26Henderson Robert SdirectorAward / grant7,00028,000Form 4
2026-02-26Henderson Robert SdirectorAward / grant1,7507,000Form 4
2026-02-26Henderson Robert SdirectorAward / grant2,6552,655Form 4
2026-02-26Bowman GrantofficerAward / grant100,000200,000Form 4
2026-02-26Bowman GrantofficerAward / grant39,82039,820Form 4
2026-02-26Valladares III Jorge L.directorAward / grant6,1946,194Form 4
2026-02-26Yokozuka NorikoofficerAward / grant120,000360,000Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.

Congressional disclosures

No congressional trades disclosed for this company.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.