Related Party Transactions	3 Months Ended	10 Months Ended
Related Party Transactions	Mar. 31, 2022	Dec. 31, 2021
Related Party Transactions	Note 5: Related Party Debt On January 18, 2022, in connection with the Business Combination Agreement, the Company entered into the Promissory Notes. Through such promissory notes, the holders may fund up to $100,000,000 to support the operational financing needs of the Company prior to the closing of the Business Combination. These notes bear interest at a rate of 3% per annum and are due upon the earliest of either (i) the date on which the Business Combination closes or (ii) January 17, 2023. Drawdowns on the Promissory Notes may be made in multiples of $10,000 unless otherwise agreed upon. Once an amount is drawn down under the Promissory Notes, it is no longer available for future drawdown requests even if prepaid. During the three months ended March 31, 2022, the Company borrowed $20,000,000 under this agreement, leaving remaining availability of $80,000,000 as of March 31, 2022.
Social Capital Suvretta Holdings Corp. III [Member]
Related Party Transactions	NOTE 5. RELATED PARTY TRANSACTIONS Founder Shares On March 2, 2021, the Sponsor paid $25,000 to cover certain offering and formation costs of the Company in consideration for which the Sponsor received 5,750,000 Class B ordinary shares (the “Founder Shares”). On June 29, 2021, the Company effected a share capitalization with respect to its Class B ordinary shares of 575,000 shares thereof, resulting in the Company’s initial shareholders holding an aggregate of 6,325,000 Founder Shares. All share and per-share amounts have been retroactively restated to reflect the share capitalization. The Founder Shares included an aggregate of up to 825,000 shares that were subject to forfeiture depending on the extent to which the underwriters’ over-allotment option was exercised. As a result of the underwriters’ election to partially exercise their over-allotment option, a total of 750,000 Founder Shares are no longer subject to forfeiture and 75,000 Founder Shares were forfeited, resulting in an aggregate of 6,250,000 Founder Shares outstanding. In June 2021, the Sponsor transferred 30,000 Founder Shares to Marc Semigran, an independent director of the Company. The sale of the Founders Shares to the Company’s director is in the scope of FASB ASC Topic 718, “Compensation-Stock Compensation” (“ASC 718”). Under ASC 718, stock-based compensation associated with equity-classified awards is measured at fair value upon the grant date. The fair value of the 30,000 shares granted to the Company’s director was $214,160 or approximately $7.14 per share. The Founders Shares were effectively sold subject to a performance condition (i.e., the occurrence of a Business Combination). Compensation expense related to the Founders Shares is recognized only when the performance condition is probable of occurrence under the applicable accounting literature in this circumstance. As of March 31, 2022, the Company determined that a Business Combination is not considered probable, and, therefore, no stock-based compensation expense has been recognized. Stock-based compensation would be recognized at the date a Business Combination is considered probable (i.e., upon consummation of a Business Combination) in an amount equal to the number of Founders Shares times the grant date fair value per share (unless subsequently modified) less the amount initially received for the purchase of the Founders Shares. The Sponsor and the Company’s directors and officers have agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier of: (A) one year after the completion of a Business Combination and (B) subsequent to a Business Combination, (x) if the last reported sale price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share dividends, rights issuances, consolidations, reorganizations, recapitalizations and other similar transactions) for any 20 trading days within any 30-trading day period commencing at least 150 days after a Business Combination, or (y) the date on which the Company completes a liquidation, merger, amalgamation, share exchange, reorganization or other similar transaction that results in all of the Public Shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property. Administrative Services Agreement The Company entered into an agreement in which it will pay an affiliate of the Sponsor $10,000 per month, commencing on June 30, 2021, for office space, administrative and support services. Upon completion of a Business Combination or its liquidation, the Company will cease paying these monthly fees. For the three months ended March 31, 2022, the Company incurred $30,000 in fees for these services, of which is included in due to related party in the accompanying condensed balance sheet. For the period from February 25, 2021 (inception) through March 31, 2021, the Company did not incur any fees for these services. Due to Related Party As of March 31, 2022, an affiliate of the Sponsor had advanced the Company $33,623 for working capital purposes, of which $0 was repaid during the three months ended March 31, 2022. As of March 31, 2022, and December 31, 2021, the outstanding balance under the advances amounted to $43,623 and $10,000 respectively. Promissory Note—Related Party On March 2, 2021, the Company issued an unsecured promissory note to the Sponsor (the “Pre-IPO Sponsor Promissory Note”), pursuant to which the Company could borrow up to an aggregate principal amount of $300,000. The Pre-IPO Sponsor Promissory Note was non-interest bearing and payable on the earlier of December 31, 2021 and the completion of the Initial Public Offering. The outstanding balance under the Pre-IPO Sponsor Promissory Note of $300,000 was repaid at the closing of the Initial Public Offering on July 2, 2021. Borrowings are no longer available under the Pre-IPO Sponsor Promissory Note. Related Party Loans In order to fund working capital deficiencies or finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor or certain of the Company’s officers and directors may, but are not obligated to (other than pursuant to the Promissory Note (see Note 9)), loan the Company additional funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, it may repay such loaned amounts out of the proceeds of the Trust Account. In the event that the Business Combination does not close, the Company may use a portion of the working capital held outside the Trust Account to repay such loaned amounts but no proceeds from the Trust Account would be used to repay such loaned amounts. As of March 31, 2022 and December 31, 2021, there were no outstanding amounts under the Working Capital Loans. Subscription Agreements Concurrently with the execution of the ProKidney Business Combination Agreement, the Company entered into Subscription Agreements with the Sponsor Related PIPE Investors, pursuant to which the Sponsor Related PIPE Investors have subscribed for Class A ordinary shares. The Sponsor Related PIPE Investors are expected to fund $156,400,000 of the PIPE Investment, for which they will receive 15,640,000 Class A ordinary shares. Specifically, (i) SC Master Holdings, LLC, an entity affiliated with Mr. Palihapitiya, subscribed for 12,500,000 Class A ordinary shares and (ii) Averill Master Fund, Ltd., an entity affiliated with Mr. Mehta, subscribed for 3,140,000 Class A ordinary shares. The PIPE Investment will be consummated substantially concurrently with the Closing.	NOTE 5. RELATED PARTY TRANSACTIONS Founder Shares On March 2, 2021, the Sponsor paid $25,000 to cover certain offering and formation costs of the Company in consideration for which the Sponsor received 5,750,000 Class B ordinary shares (the “Founder Shares”). On June 29, 2021, the Company effected a share capitalization with respect to its Class B ordinary shares of 575,000 shares thereof, resulting in the Company’s initial shareholders holding an aggregate of 6,325,000 Founder Shares. All share and per-share amounts have been retroactively restated to reflect the share capitalization. The Founder Shares included an aggregate of up to 825,000 shares that were subject to forfeiture depending on the extent to which the underwriters’ over-allotment option was exercised. As a result of the underwriters’ election to partially exercise their over-allotment option, a total of 750,000 Founder Shares are no longer subject to forfeiture and 75,000 Founder Shares were forfeited, resulting in an aggregate of 6,250,000 Founder Shares outstanding. In June 2021, the Sponsor transferred 30,000 Founder Shares to Marc Semigran, an independent director of the Company. The sale of the Founders Shares to the Company’s director is in the scope of FASB ASC Topic 718, “Compensation-Stock Compensation” (“ASC 718”). Under ASC 718, stock-based compensation associated with equity-classified awards is measured at fair value upon the grant date. The fair value of the 30,000 shares granted to the Company’s director was $214,160 or approximately $7.14 per share. The Founders Shares were effectively sold subject to a performance condition (i.e., the occurrence of a Business Combination). Compensation expense related to the Founders Shares is recognized only when the performance condition is probable of occurrence. As of December 31, 2021, the Company determined that a Business Combination is not considered probable, and, therefore, no stock-based compensation expense has been recognized. Stock-based compensation would be recognized at the date a Business Combination is considered probable (i.e., upon consummation of a Business Combination) in an amount equal to the number of Founders Shares times the grant date fair value per share (unless subsequently modified) less the amount initially received for the purchase of the Founders Shares. The Sponsor and the Company’s directors and officers have agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier of: (A) one year after the completion of a Business Combination and (B) subsequent to a Business Combination, (x) if the last reported sale price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share dividends, rights issuances, consolidations, reorganizations, recapitalizations and other similar transactions) for any 20 trading days within any 30-trading day period commencing at least 150 days after a Business Combination, or (y) the date on which the Company completes a liquidation, merger, amalgamation, share exchange, reorganization or other similar transaction that results in all of the Public Shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property. Administrative Services Agreement The Company entered into an agreement in which it will pay an affiliate of the Sponsor $10,000 per month, commencing on June 30, 2021, for office space, administrative and support services. Upon completion of a Business Combination or its liquidation, the Company will cease paying these monthly fees. For the period from February 25, 2021 (inception) through December 31, 2021, the Company incurred $60,000 in fees for these services, of which such amount was recognized in Operating and Formation Costs in the accompanying statement of operations. Advances from Related Party As of December 31, 2021, the Sponsor had advanced the Company $97,319 for working capital purposes, inclusive of the administrative services agreement noted above, of which $87,319 was repaid during the period ended December 31, 2021. As of December 31, 2021, the outstanding balance was $10,000. Promissory Note—Related Party On March 2, 2021, the Sponsor issued an unsecured promissory note to the Company (the “Promissory Note”), pursuant to which the Company could borrow up to an aggregate principal amount of $300,000. The Promissory Note was non-interest bearing and payable on the earlier of December 31, 2021 and the completion of the Initial Public Offering. The outstanding balance under the Promissory Note of $300,000 was repaid at the closing of the Initial Public Offering on July 2, 2021. Borrowings are no longer available under the Promissory Note. Related Party Loans In order to fund working capital deficiencies or finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor or certain of the Company’s officers and directors may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, it may repay such loaned amounts out of the proceeds of the Trust Account. In the event that the Business Combination does not close, the Company may use a portion of the working capital held outside the Trust Account to repay such loaned amounts but no proceeds from the Trust Account would be used to repay such loaned amounts. As of December 31, 2021, there were no outstanding amounts under the Working Capital Loans.