XML 11 R2.htm IDEA: XBRL DOCUMENT
v3.25.1

Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Pay vs Performance Disclosure |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance As required by Section 953(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 402(v) of Regulation S-K, or the PVP Rules, we are providing information about the relationship between our company performance and executive compensation actually paid to our principal executive officer(s), or the PEO(s), and the other named executive officers, or the Non-PEO NEOs, as calculated in accordance with Item 402(v) of Regulation S-K. In the below pay versus performance table, we provide information about compensation of our named executive officers for each of the last two fiscal years, or the Covered Years. Additionally, we provide information about the results for certain financial performance measures during the Covered Years. Although the PVP Rules require us to disclose “compensation actually paid,” these amounts do not necessarily reflect compensation that our named executive officers actually earned in the Covered Years. Instead, “compensation actually paid” reflects a calculation computed in accordance with the PVP Rules, including adjusted values to unvested and vested equity awards during the Covered Years based on either year-end or vesting date stock prices and various accounting valuation assumptions. “Compensation actually paid” generally fluctuates due to stock price performance.
Year |  |  | Summary Compensation Table Total for PEO 1 (Aiyar)1, 2 ($) |  |  |  | Summary Compensation Table Total for PEO 2 (Lucchino)1, 2 ($) |  |  |  | Compensation Actually Paid to PEO 1 (Aiyar)3 ($) |  |  |  | Compensation Actually Paid to PEO 2 (Lucchino)3 ($) |  |  |  | Average Summary Compensation Table Total for Non-PEO NEOs 2, 4 ($) |  |  |  | Average Compensation Actually Paid to Non-PEO NEOs 4, 5 ($) |  |  |  | Value of Initial Fixed $100 Investment Based on Total Shareholder Return 6 ($) |  |  |  | Net Income (in thousands) 7 ($) |  |
2024 |  |  | $ | 939,075 |  |  |  | $ | — |  |  |  | $ | (179,934 | ) |  |  | $ | — |  |  |  | $ | 2,138,421 |  |  |  | $ | 1,778,028 |  |  |  | $ | 20 |  |  |  | $ | (83,581 | ) |
2023 |  |  | $ | 2,858,230 |  |  |  | $ | 3,878,265 |  |  |  | $ | 8,474,721 |  |  |  | $ | 1,796,976 |  |  |  | $ | 1,516,911 |  |  |  | $ | 2,011,079 |  |  |  | $ | 25 |  |  |  | $ | (81,172 | ) |
1. David L. Lucchino served as our PEO through the completion of the Merger in November 2023. Following the Merger, Dr. Aiyar became our PEO. Dr. Aiyar was the sole PEO for 2024. 2. Amounts reported in these columns represent (i) the “Total” compensation reported in the Summary Compensation Table, or SCT, for the indicated fiscal year in the case of our PEO(s) and (ii) the average of the “Total” compensation reported in the SCT for the Non-PEO NEOs in the indicated year. 3. Compensation actually paid to our PEOs represents the “Total” compensation reported in the SCT for the PEOs for the applicable fiscal year, adjusted as follows:
|  | Compensation Actually Paid to PEO 1 (Aiyar) |  |  | Compensation Actually Paid to PEO 2 (Lucchino) |
|  | 2023 |  |  | 2024 |  |  | 2023 |  |  | 2024 |
Summary Compensation Table Total for PEO |  | $ | 2,858,230 |  |  | $ | 939,075 |  |  | $ | 3,878,265 |  |  | $ | — |
Subtract Grant Date Fair Value of Option Awards and Stock Awards Granted in Fiscal Year(a) |  | $ | (2,013,364 | ) |  | $ | — |  |  | $ | (1,338,400 | ) |  | $ | — |
Add Fair Value at Fiscal Year-End of Outstanding and Unvested Option Awards and Stock Awards Granted in Fiscal Year(b) |  | $ | 6,355,830 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Adjust for Change in Fair Value of Outstanding and Unvested Option Awards and Stock Awards Granted in Prior Fiscal Years(b) |  | $ | 1,065,352 |  |  | $ | (1,326,604 | ) |  | $ | — |  |  | $ | — |
Adjust for Fair Value at Vesting of Option Awards and Stock Awards Granted in Fiscal Year That Vested During Fiscal Year(b) |  | $ | 117,928 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Adjust for Change in Fair Value as of Vesting Date of Option Awards and Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year(b) |  | $ | 90,745 |  |  | $ | 207,595 |  |  | $ | (742,889 | ) |  | $ | — |
Subtract Fair Value as of Prior Fiscal Year-End of Option Awards and Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year(b) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Add Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Compensation Actually Paid |  | $ | 8,474,721 |  |  | $ | (179,934 | ) |  | $ | 1,796,976 |  |  | $ | — |
(a) The amounts reflect the aggregate grant-date fair value reported in the “Stock Awards” and “Option Awards” columns in the SCT for the applicable year. (b) In accordance with Item 402(v) requirements, the fair values of unvested and outstanding equity awards to our PEO(s) were remeasured as of the end of each fiscal year, and as of each vesting date, during the years displayed in the table above. We approached the determination of fair value in the same way as we historically have determined fair value and fair values as of each measurement date were determined using valuation assumptions and methodologies (including expected term, volatility, dividend yield, and risk-free interest rates) that are generally consistent with those used to estimate fair value at grant under U.S. GAAP. 4. 2024 Non-PEO NEOs include Dr. Cerio and Dr. Olugemo. 2023 Non-PEO NEOs include Mr. Agarwal, Steve Colletti, our former Chief Scientific Officer, and Christopher R. Loose, our former Chief Scientific Officer. 5. Compensation actually paid to our Non-PEO NEOs represents the average “Total” compensation reported in the SCT for such Non-PEO NEOs for the applicable fiscal year, adjusted as follows:
|  | 2023 |  |  | 2024 |
Summary Compensation Table Average Total for Non-PEO NEOs |  | $ | 1,516,911 |  |  | $ | 2,138,421 |
Subtract Grant Date Fair Value of Option Awards and Stock Awards Granted in Fiscal Year(a) |  | $ | (710,621 | ) |  | $ | (1,725,255 | )
Add Fair Value at Fiscal Year-End of Outstanding and Unvested Option Awards and Stock Awards Granted in Fiscal Year(b) |  | $ | 1,513,455 |  |  | $ | 1,364,862 |
Adjust for Change in Fair Value of Outstanding and Unvested Option Awards and Stock Awards Granted in Prior Fiscal Years(b) |  | $ | 131,134 |  |  | $ | — |
Adjust for Fair Value at Vesting of Option Awards and Stock Awards Granted in Fiscal Year That Vested During Fiscal Year(b) |  | $ | 30,797 |  |  | $ | — |
Adjust for Change in Fair Value as of Vesting Date of Option Awards and Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year(b) |  | $ | (213,930 | ) |  | $ | — |
Subtract Fair Value as of Prior Fiscal Year-End of Option Awards and Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year(b) |  | $ | (256,667 | ) |  | $ | — |
Add Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  | $ | — |  |  | $ | — |
Compensation Actually Paid |  | $ | 2,011,079 |  |  | $ | 1,778,028 |
(a) The amounts reflect the aggregate grant-date fair value reported in the “Stock Awards” and “Option Awards” columns in the SCT for the applicable year. (b) In accordance with Item 402(v) requirements, the fair values of unvested and outstanding equity awards to our non-PEO NEOs were remeasured as of the end of each fiscal year, and as of each vesting date, during the years displayed in the table above. We approached the determination of fair value in the same way as we historically have determined fair value and fair values as of each measurement date were determined using valuation assumptions and methodologies (including expected term, volatility, dividend yield, and risk-free interest rates) that are generally consistent with those used to estimate fair value at grant under U.S. GAAP. 6. The comparison assumes $100 was invested in Frequency’s common stock on December 31, 2022. As supplemental disclosure, if $100 was invested in our common stock on November 3, 2023 (i.e., the date we closed our Merger), based on the closing price of our common stock on the day we began training on the Nasdaq after such closing, the amounts reported would be $320 and $254 at the end of fiscal years 2023 and 2024, respectively. Historic stock price performance is not necessarily indicative of future stock price performance. 7. Represents U.S. GAAP net income as reflected in our audited financial statements. |
Company Selected Measure Name | Net Income |
Named Executive Officers, Footnote | 4. 2024 Non-PEO NEOs include Dr. Cerio and Dr. Olugemo. 2023 Non-PEO NEOs include Mr. Agarwal, Steve Colletti, our former Chief Scientific Officer, and Christopher R. Loose, our former Chief Scientific Officer. |
Adjustment To PEO Compensation, Footnote | 3. Compensation actually paid to our PEOs represents the “Total” compensation reported in the SCT for the PEOs for the applicable fiscal year, adjusted as follows:
|  | Compensation Actually Paid to PEO 1 (Aiyar) |  |  | Compensation Actually Paid to PEO 2 (Lucchino) |
|  | 2023 |  |  | 2024 |  |  | 2023 |  |  | 2024 |
Summary Compensation Table Total for PEO |  | $ | 2,858,230 |  |  | $ | 939,075 |  |  | $ | 3,878,265 |  |  | $ | — |
Subtract Grant Date Fair Value of Option Awards and Stock Awards Granted in Fiscal Year(a) |  | $ | (2,013,364 | ) |  | $ | — |  |  | $ | (1,338,400 | ) |  | $ | — |
Add Fair Value at Fiscal Year-End of Outstanding and Unvested Option Awards and Stock Awards Granted in Fiscal Year(b) |  | $ | 6,355,830 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Adjust for Change in Fair Value of Outstanding and Unvested Option Awards and Stock Awards Granted in Prior Fiscal Years(b) |  | $ | 1,065,352 |  |  | $ | (1,326,604 | ) |  | $ | — |  |  | $ | — |
Adjust for Fair Value at Vesting of Option Awards and Stock Awards Granted in Fiscal Year That Vested During Fiscal Year(b) |  | $ | 117,928 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Adjust for Change in Fair Value as of Vesting Date of Option Awards and Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year(b) |  | $ | 90,745 |  |  | $ | 207,595 |  |  | $ | (742,889 | ) |  | $ | — |
Subtract Fair Value as of Prior Fiscal Year-End of Option Awards and Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year(b) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Add Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Compensation Actually Paid |  | $ | 8,474,721 |  |  | $ | (179,934 | ) |  | $ | 1,796,976 |  |  | $ | — |
Non-PEO NEO Average Total Compensation Amount | $ 2,138,421 | $ 1,516,911
Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,778,028 | 2,011,079
Adjustment to Non-PEO NEO Compensation Footnote | 5. Compensation actually paid to our Non-PEO NEOs represents the average “Total” compensation reported in the SCT for such Non-PEO NEOs for the applicable fiscal year, adjusted as follows:
|  | 2023 |  |  | 2024 |
Summary Compensation Table Average Total for Non-PEO NEOs |  | $ | 1,516,911 |  |  | $ | 2,138,421 |
Subtract Grant Date Fair Value of Option Awards and Stock Awards Granted in Fiscal Year(a) |  | $ | (710,621 | ) |  | $ | (1,725,255 | )
Add Fair Value at Fiscal Year-End of Outstanding and Unvested Option Awards and Stock Awards Granted in Fiscal Year(b) |  | $ | 1,513,455 |  |  | $ | 1,364,862 |
Adjust for Change in Fair Value of Outstanding and Unvested Option Awards and Stock Awards Granted in Prior Fiscal Years(b) |  | $ | 131,134 |  |  | $ | — |
Adjust for Fair Value at Vesting of Option Awards and Stock Awards Granted in Fiscal Year That Vested During Fiscal Year(b) |  | $ | 30,797 |  |  | $ | — |
Adjust for Change in Fair Value as of Vesting Date of Option Awards and Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year(b) |  | $ | (213,930 | ) |  | $ | — |
Subtract Fair Value as of Prior Fiscal Year-End of Option Awards and Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year(b) |  | $ | (256,667 | ) |  | $ | — |
Add Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  | $ | — |  |  | $ | — |
Compensation Actually Paid |  | $ | 2,011,079 |  |  | $ | 1,778,028 |
Compensation Actually Paid vs. Total Shareholder Return | The graphs below illustrate the relationship between compensation actually paid, or CAP, to our PEOs and the average of the compensation actually paid to our Non-PEO NEOs, with (i) our cumulative total shareholder return, or TSR, and (ii) our net income, in each case, for the fiscal years ended December 31, 2024 and 2023. CAP and TSR |
Compensation Actually Paid vs. Net Income | CAP and Net Income (Loss) |
Total Shareholder Return Amount | $ 20 | 25
Net Income (Loss) | $ (83,581,000) | $ (81,172,000)
PEO Name | Dr. Aiyar | David L. Lucchino
David L. Lucchino [Member] |  |
Pay vs Performance Disclosure |  |
PEO Total Compensation Amount | $ 0 | $ 3,878,265
PEO Actually Paid Compensation Amount | 0 | 1,796,976
David L. Lucchino [Member] | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | (1,338,400)
David L. Lucchino [Member] | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
David L. Lucchino [Member] | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
David L. Lucchino [Member] | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
David L. Lucchino [Member] | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | (742,889)
David L. Lucchino [Member] | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
David L. Lucchino [Member] | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
Dr. Aiyar [Member] |  |
Pay vs Performance Disclosure |  |
PEO Total Compensation Amount | 939,075 | 2,858,230
PEO Actually Paid Compensation Amount | (179,934) | 8,474,721
Dr. Aiyar [Member] | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | (2,013,364)
Dr. Aiyar [Member] | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 6,355,830
Dr. Aiyar [Member] | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | (1,326,604) | 1,065,352
Dr. Aiyar [Member] | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 117,928
Dr. Aiyar [Member] | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 207,595 | 90,745
Dr. Aiyar [Member] | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
Dr. Aiyar [Member] | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 0
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | (1,725,255) | (710,621)
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 1,364,862 | 1,513,455
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 131,134
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | 30,797
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | (213,930)
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | 0 | (256,667)
Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |
Pay vs Performance Disclosure |  |
Adjustment to Compensation, Amount | $ 0 | $ 0

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph ii + Details
Name: | ecd_CompActuallyPaidVsNetIncomeTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph i + Details
Name: | ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-4 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-7 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-7 Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_IndividualAxis=krro_DavidLLucchinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_IndividualAxis=krro_DrAiyarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |