Company · Ownership research

PROKIDNEY CORP. PROK

CIK 0001850270

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through 2026-08-20.

Insider purchases & sales

Purchased: $76.51M
Sold: $31.30M

Sep 1, 2023 – Aug 20, 2026
Available records · partial months are marked ·

20266 of 6 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-08-20	Pereira Brian JG Director	Sale	$316.56K 222,948 shares sold	100.00% sold Trust holding	▾
2026-08-20	Pereira Brian JG Director	Sale	$38.41K 27,052 shares sold	100.00% sold Direct holding	▾
2026-08-19	Pereira Brian JG Director	Sale	$321.20K 222,949 shares sold	50.00% sold Trust holding	▾
2026-08-19	Pereira Brian JG Director	Sale	$38.97K 27,051 shares sold	50.00% sold Direct holding	▾
2026-08-18	Pereira Brian JG Director	Sale	$314.47K 229,338 shares sold	33.96% sold Trust holding	▾
2026-08-18	Pereira Brian JG Director	Sale	$38.16K 27,826 shares sold	33.96% sold Direct holding	▾

Showing 6 / 6 record groups in 2026. The complete set is available through the API.

PROKIDNEY CORP. · PROK

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 6 of 6 purchase / sale groups and 24 of 24 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"PROK","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.