PROKProKidney Corp.Healthcare · Biotechnologyas of 2026-09-16
Horizon

Issued 2026-09-16 at $1.85 · now $1.85 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, PROK has typically landed between $1.21 and $2.55 — a range of −34.4% to +37.6% from the issuance price $1.85.

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

1,287 overlapping 1 month windows · 2021-06-302026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.756.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($1.85) — 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 PROK has typically landed a month from the 2026-09-16 close of $1.85 — the range is history, not a prediction.

$1.21worst · -34.4%$2.55best · +37.6%
  • now $1.85 (+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). $1.84 (-0.4%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $1.63$2.06
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $1.21$2.55
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 1,287 windows spanning 2021-06-30 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
2023-09-28−67.9%−67.9%+1.1%
2023-10-05−66.1%−68.2%+0.0%
2023-10-06−66.1%−67.4%+0.0%
3 best
2025-07-02+463.3%+0.0%+795.1%
2025-06-05+451.5%−28.2%+451.5%
2025-06-23+438.0%−6.7%+754.8%

1,287 overlapping windows · 2021-06-302026-09-16 · 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 ~6 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
20%
+2.2%
n=5
Feb
80%
+4.9%
n=5
Mar
40%
−10.2%
n=5
Apr
60%
+3.3%
n=5
May
60%
+15.0%
n=5
Jun
40%
−8.6%
n=5
Jul
33%
+58.2%
n=6
Aug
33%
−4.3%
n=6
Sep
33%
−12.0%
n=6
Oct
60%
−8.2%
n=5
Nov
40%
−2.0%
n=5
Dec
60%
−6.6%
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$3$12026-08-20: 2 insider sales, $355K — Pereira Brian JG …2026-08-19: 2 insider sales, $360K — Pereira Brian JG …2026-08-18: 2 insider sales, $353K — Pereira Brian JG …2025-11-13: 2 insider sales, $1.2M — Pereira Brian JG …2025-11-12: 2 insider sales, $695K — Pereira Brian JG …2025-11: 4 open-market sales, $1.9M2026-08: 6 open-market sales, $1.1M↑ buys↓ salesdirector Pereira Brian JG — Sale on 2026-08-20, filed same daydirector Pereira Brian JG — Sale on 2026-08-20, filed same daydirector Pereira Brian JG — Sale on 2026-08-19, filed 1 day after the tradedirector Pereira Brian JG — Sale on 2026-08-19, filed 1 day after the tradedirector Pereira Brian JG — Sale on 2026-08-18, filed 2 days after the tradedirector Pereira Brian JG — Sale on 2026-08-18, filed 2 days after the tradedirector Pereira Brian JG — Sale on 2025-11-13, filed 1 day after the tradedirector Pereira Brian JG — Sale on 2025-11-13, filed 1 day after the tradedirector Pereira Brian JG — Sale on 2025-11-12, filed 2 days after the tradedirector Pereira Brian JG — Sale on 2025-11-12, filed 2 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-08-20Pereira Brian JGdirectorSale222,948 @ $1.42$317K−100.0% of holdingnot yet — horizon still opennot yet — horizon still open0Form 4 · filed same day
2026-08-20Pereira Brian JGdirectorSale27,052 @ $1.42$38K−100.0% of holdingnot yet — horizon still opennot yet — horizon still open0Form 4 · filed same day
2026-08-19Pereira Brian JGdirectorSale222,949 @ $1.44$321K−50.0% of holdingnot yet — horizon still opennot yet — horizon still open222,948Form 4 · filed 1 day after the trade
2026-08-19Pereira Brian JGdirectorSale27,051 @ $1.44$39K−50.0% of holdingnot yet — horizon still opennot yet — horizon still open27,052Form 4 · filed 1 day after the trade
2026-08-18Pereira Brian JGdirectorSale229,338 @ $1.37$314K−34.0% of holdingnot yet — horizon still opennot yet — horizon still open445,897Form 4 · filed 2 days after the trade
2026-08-18Pereira Brian JGdirectorSale27,826 @ $1.37$38K−34.0% of holdingnot yet — horizon still opennot yet — horizon still open54,103Form 4 · filed 2 days after the trade
2025-11-13Pereira Brian JGdirectorSale447,803 @ $2.37$1.1M−100.0% of holding−10.1%−39.9%0Form 4 · filed 1 day after the trade
2025-11-13Pereira Brian JGdirectorSale54,333 @ $2.37$129K−100.0% of holding−10.1%−39.9%0Form 4 · filed 1 day after the trade
2025-11-12Pereira Brian JGdirectorSale227,431 @ $2.72$619K−33.7% of holding−17.3%−46.8%447,803Form 4 · filed 2 days after the trade
2025-11-12Pereira Brian JGdirectorSale27,595 @ $2.72$75K−33.7% of holding−17.3%−46.8%54,333Form 4 · filed 2 days after the trade
2025-07-08Weber Darin J.officerSale103,480 @ $3.02$313K−100.0% of holding+372.9%+258.9%0Form 4 · filed 1 day after the trade
2025-04-22Control Empresarial de Capitales S.A. de C.V.otherPurchase387,393 @ $0.71$276K+0.5% of holding−7.6%+294.5%73,842,723Form 4 · filed 2 days after the trade
2025-04-17Control Empresarial de Capitales S.A. de C.V.otherPurchase25,000 @ $0.75$19K+0.0% of holding−10.8%+287.7%73,455,330Form 4 · filed 4 days after the trade
2025-04-16Control Empresarial de Capitales S.A. de C.V.otherPurchase100,000 @ $0.75$75K+0.1% of holding−11.7%+246.0%73,430,330Form 4 · filed 2 days after the trade
2025-04-15Control Empresarial de Capitales S.A. de C.V.otherPurchase468,000 @ $0.70$326K+0.6% of holding+9.8%+304.5%73,330,330Form 4 · filed 1 day after the trade
2025-04-14Control Empresarial de Capitales S.A. de C.V.otherPurchase268,105 @ $0.73$195K+0.4% of holding−4.8%+304.3%72,862,330Form 4 · filed 2 days after the trade
2025-04-11Control Empresarial de Capitales S.A. de C.V.otherPurchase1,900 @ $0.61$1K+0.0% of holding+8.8%+297.8%72,594,225Form 4 · filed 3 days after the trade
2025-04-10Control Empresarial de Capitales S.A. de C.V.otherPurchase1,032,218 @ $0.61$628K+1.4% of holding+11.1%+360.2%72,592,325Form 4 · filed 4 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.

41 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
2026-08-04Pereira Brian JGdirectorConversion81,92981,929Form 4
2026-08-04Pereira Brian JGdirectorConversion675,235675,235Form 4
2026-08-04Pereira Brian JGdirectorConversion81,9290Form 4
2026-08-04Pereira Brian JGdirectorConversion675,2350Form 4
2026-07-01Locke Kenneth ThomasofficerAward / grant750,000750,000Form 4
2026-06-12Girolamo Todd CofficerConversion163,857327,713Form 4
2026-06-12Girolamo Todd CofficerConversion163,8570Form 4
2026-05-28DOYLE WILLIAM FdirectorAward / grant135,000135,000Form 4
2026-05-28Fox Jennifer A.directorAward / grant135,000135,000Form 4
2026-05-28Jimenez Santos Jose IgnaciodirectorAward / grant135,000135,000Form 4
2026-05-28Legorreta Pablo G.directorAward / grant135,000135,000Form 4
2026-05-28Lotvin AlandirectorAward / grant135,000135,000Form 4
2026-05-28Pereira Brian JGdirectorAward / grant135,000135,000Form 4
2026-05-28Sinha UmadirectorAward / grant135,000135,000Form 4
2026-04-28Control Empresarial de Capitales S.A. de C.V.otherConversion63,118,64573,842,723Form 4
2026-04-28Control Empresarial de Capitales S.A. de C.V.otherConversion63,118,6450Form 4
2026-03-01Weber Darin J.officerAward / grant400,000400,000Form 4
2026-03-01Culleton BrucedirectorAward / grant3,000,0003,000,000Form 4
2026-03-01Girolamo Todd CofficerAward / grant600,000600,000Form 4
2026-03-01Coulston JamesofficerAward / grant600,000600,000Form 4
2025-06-03Legorreta Pablo G.directorConversion3,823,99684,283,430Form 4
2025-06-03Legorreta Pablo G.directorConversion3,823,99626,441,905Form 4
2025-06-03Legorreta Pablo G.directorOther acquisition3,823,99622,617,909Form 4
2025-05-29Legorreta Pablo G.directorAward / grant125,862125,862Form 4
2025-05-29Jimenez Santos Jose IgnaciodirectorAward / grant125,862125,862Form 4
2025-05-29DOYLE WILLIAM FdirectorAward / grant125,862125,862Form 4
2025-05-29Lotvin AlandirectorAward / grant125,862125,862Form 4
2025-05-29Fox Jennifer A.directorAward / grant125,862125,862Form 4
2025-05-29Pereira Brian JGdirectorAward / grant125,862125,862Form 4
2025-05-29Sinha UmadirectorAward / grant125,862125,862Form 4
2025-03-01Weber Darin J.officerAward / grant450,000450,000Form 4
2025-03-01Coulston JamesofficerAward / grant650,000650,000Form 4
2025-03-01Culleton BrucedirectorAward / grant1,796,0001,796,000Form 4
2025-03-01Girolamo Todd CofficerAward / grant650,000650,000Form 4
2025-02-04Legorreta Pablo G.directorConversion532,53523,150,444Form 4
2025-02-04Legorreta Pablo G.directorOther acquisition532,53522,617,909Form 4
2025-02-04Legorreta Pablo G.directorConversion532,53588,107,426Form 4
2025-02-04Pereira Brian JGdirectorConversion81,92881,928Form 4
2025-02-04Pereira Brian JGdirectorConversion675,234675,234Form 4
2025-02-04Pereira Brian JGdirectorConversion81,92881,929Form 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.