PROK · Insider trading · 13F holders · Congress trades
Prokidney Corp. (PROK)
Who is buying and selling PROK: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 4
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $1.1M
- Congress trades, 12 months
- 0
PROK at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 PROK insider filed 1 sale worth $1.1M on SEC Form 4, and no open-market purchases.
- 4 13F filers hold PROK among their 50 largest positions, worth $35.0M combined. The biggest bets by portfolio weight are Brown University (2.1%), Bleichroeder LP (0.7%) and Artia Global Partners LP (0.7%).
- No member of Congress has disclosed a trade in PROK.
- PROK last closed at $1.47 on Oct 29, 2026.
PROK insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 PROK insider filed 1 sale worth $1.1M on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Pereira Brian JG | Director | Sale | 757,164 | $1.41 | $1.1M | SEC |
Who owns PROK? Hedge funds and superinvestors
4 13F filers hold PROK among their 50 largest positions, worth $35.0M combined. The biggest bets by portfolio weight are Brown University (2.1%), Bleichroeder LP (0.7%) and Artia Global Partners LP (0.7%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Montanova Capital, LLCHedge fund | 0.5% | $25.2M | 12,341,266 | +0.0% shares | Q2 2026 |
| Bleichroeder LPHedge fund | 0.7% | $4.1M | 2,000,000 | +0.0% shares | Q2 2026 |
| Artia Global Partners LPHedge fund | 0.7% | $3.7M | 1,806,939 | +0.0% shares | Q2 2026 |
| Brown UniversityEndowment & foundation | 2.1% | $2.0M | 1,000,000 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 4). Screen PROK in the grand portfolio →
PROK stock trades by members of Congress
No member of Congress has disclosed a trade in PROK.
PROK questions and answers
Are insiders buying PROK stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 PROK insider filed 1 sale worth $1.1M on SEC Form 4, and no open-market purchases.
Which hedge funds own PROK?
4 13F filers hold PROK among their 50 largest positions, worth $35.0M combined. The biggest bets by portfolio weight are Brown University (2.1%), Bleichroeder LP (0.7%) and Artia Global Partners LP (0.7%).
Has Congress traded PROK?
No member of Congress has disclosed a trade in PROK.
Who is the largest holder of PROK?
Among 13F filers, Montanova Capital, LLC reports the largest PROK position, $25.2M (12,341,266 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Brown University's: 2.1% of its portfolio.
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