Prokidney (PROK) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
- Closed at $1.33, -8.59% vs the prior close of $1.46.
- Volume 1.65M shares, 1.2x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
PROK slides 8.6% to $1.33, a 1-month low, 5 down days in a row. Closed at $1.33, -8.59% vs the prior close of $1.46. Day range $1.30–$1.47, opened at $1.43.
PROK daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — PROK slides 8.6% to $1.33, a 1-month low, 5 down days in a row
- Closed at $1.33, -8.59% vs the prior close of $1.46. Day range $1.30–$1.47, opened at $1.43.
- Volume was 1.65M shares, 1.2x its 50-day average of 1.42M.
- Price is -20.7% vs its 50-day average ($1.68) and -28.5% vs its 200-day average ($1.86).
- 52-week range $1.30–$3.48; today's close sits at 1% of that range, 61.8% below the 52-week high.
- That makes 5 straight losses.
Oct 15, 2026 — PROK dips 1.0% to $1.46, a 1-month low, 4 down days in a row
- Closed at $1.46, -1.02% vs the prior close of $1.47. Day range $1.42–$1.49, opened at $1.44.
- Volume was 1.11M shares, 0.8x its 50-day average of 1.41M.
- Price is -13.6% vs its 50-day average ($1.68) and -22.0% vs its 200-day average ($1.87).
- 52-week range $1.30–$3.48; today's close sits at 7% of that range, 58.2% below the 52-week high.
- That makes 4 straight losses.
Oct 14, 2026 — PROK slides 6.4% to $1.47, a 1-month low, 3 down days in a row
- Closed at $1.47, -6.37% vs the prior close of $1.57. Day range $1.41–$1.57, opened at $1.54.
- Volume was 2.13M shares, 1.5x its 50-day average of 1.38M.
- Price is -12.9% vs its 50-day average ($1.69) and -21.3% vs its 200-day average ($1.87).
- 52-week range $1.30–$3.48; today's close sits at 8% of that range, 57.8% below the 52-week high.
- That makes 3 straight losses.
Oct 13, 2026 — PROK slides 6.0% to $1.57
- Closed at $1.57, -5.99% vs the prior close of $1.67. Day range $1.53–$1.68, opened at $1.65.
- Volume was 1.59M shares, 1.2x its 50-day average of 1.36M.
- Price is -7.1% vs its 50-day average ($1.69) and -16.2% vs its 200-day average ($1.87).
- 52-week range $1.30–$3.48; today's close sits at 12% of that range, 54.9% below the 52-week high.
Oct 12, 2026 — PROK slides 4.0% to $1.67
- Closed at $1.67, -4.02% vs the prior close of $1.74. Day range $1.66–$1.74, opened at $1.71.
- Volume was 607.80K shares, 0.4x its 50-day average of 1.37M — lighter than usual.
- Price is -1.2% vs its 50-day average ($1.69) and -11.1% vs its 200-day average ($1.88).
- 52-week range $1.30–$3.48; today's close sits at 17% of that range, 52.0% below the 52-week high.
Oct 9, 2026 — PROK jumps 4.8% to $1.74
- Closed at $1.74, +4.82% vs the prior close of $1.66. Day range $1.63–$1.75, opened at $1.65.
- Volume was 1.39M shares, 1.0x its 50-day average of 1.35M.
- Price is +3.1% vs its 50-day average ($1.69) and -7.6% vs its 200-day average ($1.88).
- 52-week range $1.30–$3.48; today's close sits at 20% of that range, 50.0% below the 52-week high.
Oct 8, 2026 — PROK jumps 5.7% to $1.66
- Closed at $1.66, +5.73% vs the prior close of $1.57. Day range $1.53–$1.67, opened at $1.55.
- Volume was 1.13M shares, 0.8x its 50-day average of 1.34M.
- Price is -1.5% vs its 50-day average ($1.68) and -12.0% vs its 200-day average ($1.89).
- 52-week range $1.30–$3.48; today's close sits at 17% of that range, 52.3% below the 52-week high.
Oct 7, 2026 — PROK dips 1.9% to $1.57, a 1-month low
- Closed at $1.57, -1.87% vs the prior close of $1.60. Day range $1.55–$1.60, opened at $1.56.
- Volume was 831.60K shares, 0.6x its 50-day average of 1.34M.
- Price is -6.7% vs its 50-day average ($1.68) and -17.0% vs its 200-day average ($1.89).
- 52-week range $1.30–$3.48; today's close sits at 12% of that range, 54.9% below the 52-week high.
Oct 6, 2026 — PROK rises 1.3% to $1.60
- Closed at $1.60, +1.27% vs the prior close of $1.58. Day range $1.55–$1.61, opened at $1.58.
- Volume was 770.60K shares, 0.6x its 50-day average of 1.35M — lighter than usual.
- Price is -4.9% vs its 50-day average ($1.68) and -15.6% vs its 200-day average ($1.90).
- 52-week range $1.30–$3.48; today's close sits at 14% of that range, 54.0% below the 52-week high.
Oct 5, 2026 — PROK slides 8.1% to $1.58, a 1-month low
- Closed at $1.58, -8.14% vs the prior close of $1.72. Day range $1.58–$1.74, opened at $1.69.
- Volume was 981.80K shares, 0.7x its 50-day average of 1.37M.
- Price is -6.0% vs its 50-day average ($1.68) and -16.8% vs its 200-day average ($1.90).
- 52-week range $1.30–$3.48; today's close sits at 13% of that range, 54.6% below the 52-week high.
Oct 2, 2026 — PROK rises 0.6% to $1.72, 5 up days in a row
- Closed at $1.72, +0.58% vs the prior close of $1.71. Day range $1.66–$1.75, opened at $1.72.
- Volume was 1.09M shares, 0.8x its 50-day average of 1.36M.
- Price is +2.4% vs its 50-day average ($1.68) and -9.6% vs its 200-day average ($1.90).
- 52-week range $1.30–$3.48; today's close sits at 19% of that range, 50.6% below the 52-week high.
- That makes 5 straight gains.
PROK latest news & SEC filings
Every SEC filing by or about PROK in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Aug 20, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Pereira Brian Jg sold 27,052 shares at $1.42 (≈$38.41K) on Aug 20, 2026
- Pereira Brian Jg sold 222,948 shares at $1.42 (≈$316.59K) on Aug 20, 2026
- Pereira Brian Jg sold 27,052 shares at $1.42 (≈$38.41K) on Aug 20, 2026
- Pereira Brian Jg sold 222,948 shares at $1.42 (≈$316.59K) on Aug 20, 2026
- Pereira Brian Jg sold 27,052 shares at $1.42 (≈$38.41K) on Aug 20, 2026
- Pereira Brian Jg sold 222,948 shares at $1.42 (≈$316.59K) on Aug 20, 2026
- …plus 18 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 18, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Aug 18, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Aug 12, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 10, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Aug 10, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Net income: -$28.42M (prior year -$16.55M) (loss widened vs Jun 30, 2025)
Aug 6, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Jul 6, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Things to know before you trade PROK
- Last results release: Aug 10, 2026 (8-K Item 2.02). Previous ones: May 15, 2026, Mar 18, 2026, Nov 10, 2025. Based on that rhythm, the next report is likely around Nov 9, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 4.09% (largest 9.8%). That is a volatile stock.
- Liquidity: about 1.32M shares (≈$1.76M) trade per day on average. Thin volume can mean wider bid/ask spreads.
- 52-week position: $1.33 vs a range of $1.30–$3.48 (1% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 25 sales; latest: Brian Jg Pereira sold 27,052 shares on Aug 20, 2026.
- Latest filings: 8-K Aug 10, 2026; 10-Q Aug 10, 2026; 8-K May 29, 2026.
- Listing: Nasdaq · industry: Biological Products, (No Diagnostic Substances).
PROK market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 1.43 | 1.47 | 1.30 | 1.33 | 1.65M |
| Oct 15, 2026 | 1.44 | 1.49 | 1.42 | 1.46 | 1.11M |
| Oct 14, 2026 | 1.54 | 1.57 | 1.41 | 1.47 | 2.13M |
| Oct 13, 2026 | 1.65 | 1.68 | 1.53 | 1.57 | 1.59M |
| Oct 12, 2026 | 1.71 | 1.74 | 1.66 | 1.67 | 607.80K |
| Oct 9, 2026 | 1.65 | 1.75 | 1.63 | 1.74 | 1.39M |
| Oct 8, 2026 | 1.55 | 1.67 | 1.53 | 1.66 | 1.13M |
| Oct 7, 2026 | 1.56 | 1.60 | 1.55 | 1.57 | 831.60K |
| Oct 6, 2026 | 1.58 | 1.61 | 1.55 | 1.60 | 770.60K |
| Oct 5, 2026 | 1.69 | 1.74 | 1.58 | 1.58 | 981.80K |
| Oct 2, 2026 | 1.72 | 1.75 | 1.66 | 1.72 | 1.09M |
| Oct 1, 2026 | 1.66 | 1.76 | 1.63 | 1.71 | 1.50M |
| Sep 30, 2026 | 1.65 | 1.67 | 1.60 | 1.66 | 1.20M |
| Sep 29, 2026 | 1.61 | 1.68 | 1.61 | 1.63 | 1.00M |
| Sep 28, 2026 | 1.58 | 1.64 | 1.54 | 1.61 | 1.81M |
| Sep 25, 2026 | 1.67 | 1.69 | 1.57 | 1.60 | 2.17M |
| Sep 24, 2026 | 1.65 | 1.69 | 1.60 | 1.68 | 1.72M |
| Sep 23, 2026 | 1.81 | 1.84 | 1.65 | 1.65 | 1.44M |
| Sep 22, 2026 | 1.78 | 1.86 | 1.77 | 1.83 | 588.50K |
| Sep 21, 2026 | 1.90 | 1.91 | 1.72 | 1.77 | 1.77M |
About Prokidney
Prokidney (PROK) is listed on the Nasdaq and classified by the SEC under “Biological Products, (No Diagnostic Substances)”. Its business address is in WINSTON-SALEM, NC. State of incorporation: Cayman Islands. Fiscal year ends December 31. SEC CIK 1850270.
PROK board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Bruce Culleton | Chief Executive Officer | Mar 3, 2026 |
| William F Doyle | Director | May 29, 2026 |
| Jennifer A. Fox | Director | May 29, 2026 |
| Santos Jose Ignacio Jimenez | Director | May 29, 2026 |
| Pablo G. Legorreta | Director | May 29, 2026 |
| Alan Lotvin | Director | May 29, 2026 |
| Brian Jg Pereira | Director | Aug 20, 2026 |
| Uma Sinha | Director | May 29, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| James Coulston | Chief Financial Officer | Mar 3, 2026 |
| Bruce Culleton | Chief Executive Officer | Mar 3, 2026 |
| Todd C Girolamo | Chief Legal Officer | Jun 15, 2026 |
| Kenneth Thomas Locke | Chief Technical Officer | Jul 6, 2026 |
| Darin J. Weber | Chief Regulatory Officer | Mar 3, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Brian Jg Pereira | Sale | 27,052 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 222,948 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 27,052 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 222,948 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 27,052 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 222,948 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 27,052 | $1.42 |
| Aug 20, 2026 | Brian Jg Pereira | Sale | 222,948 | $1.42 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 27,051 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 222,949 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 27,051 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 222,949 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 27,051 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 222,949 | $1.44 |
| Aug 19, 2026 | Brian Jg Pereira | Sale | 27,051 | $1.44 |
PROK financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | — | $-68.99M | — | $-120.12M |
| Dec 31, 2024 | — | $-61.19M | — | $-126.35M |
| Dec 31, 2023 | — | $-35.47M | — | $-90.07M |
| Dec 31, 2021 | — | $-55.15M | — | $-50.30M |
Latest balance sheet: total assets $249.02M, total liabilities $26.18M, cash $74.87M (as of Jun 30, 2026).
PROK earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 10, 2026 | 8-K Item 2.02 (results) | $1.69 |
| May 15, 2026 | 8-K Item 2.02 (results) | $1.66 |
| Mar 18, 2026 | 8-K Item 2.02 (results) | $2.08 |
| Nov 10, 2025 | 8-K Item 2.02 (results) | $2.70 |
| Aug 12, 2025 | 8-K Item 2.02 (results) | $2.24 |
| May 12, 2025 | 8-K Item 2.02 (results) | $0.75 |
| Mar 17, 2025 | 8-K Item 2.02 (results) | $1.04 |
| Nov 12, 2024 | 8-K Item 2.02 (results) | $2.05 |
| Aug 9, 2024 | 8-K Item 2.02 (results) | — |
| May 10, 2024 | 8-K Item 2.02 (results) | — |
| Mar 22, 2024 | 8-K Item 2.02 (results) | — |
| Nov 14, 2023 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.