401k Record

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Korro Bio Ops 401(k)

Recordkeeping fees per participant · Korro Bio 401(k) Retirement Plan · plan year 2024

$11.21

Higher than 10% of the 7,477 plans $1 to 10M that report it.

Source

= $1,580 / 141
Schedule H, line 2i(3); OTH_RECORDKEEPING_FEES_AMT pos 160; filing 20250618052625NAL0001226867001, received 2025-06-18
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250618052625NAL0001226867001, received 2025-06-18

10th: $11.10median $71.5290th: $209.21

Percentiles compare this plan with the Schedule H plans $1 to 10M in assets of the same plan year, excluding final filings; shown only where at least 50 comparable plans report the figure. Plan year 2024-01-01 to 2024-12-31, filing received 2025-06-18.

Cost and contributions

Administrative expenses excluding investment management, per participant

$11.21

10th: $13.66median $103.3390th: $302.77

Higher than 8% of the 14,713 plans $1 to 10M that report it.

Source

= $1,580 / 141
derived, admin_expenses (2i(12)) minus invst_mgmt_fees (2i(5)), floored at 0; filing 20250618052625NAL0001226867001, received 2025-06-18
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250618052625NAL0001226867001, received 2025-06-18

Administrative expenses per participant

$11.21

10th: $19.42median $150.2790th: $370.75

Higher than 5% of the 15,210 plans $1 to 10M that report it.

Source

= $1,580 / 141
Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250618052625NAL0001226867001, received 2025-06-18
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250618052625NAL0001226867001, received 2025-06-18

Administrative expenses as a share of assets

0.025%

10th: 0.069%median 0.519%90th: 1.146%

Higher than 3% of the 15,243 plans $1 to 10M that report it.

Source

= $1,580 / $6,377,671
Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250618052625NAL0001226867001, received 2025-06-18
assets_eoy: Schedule H, Part I line 1f col (b); TOT_ASSETS_EOY_AMT pos 61; filing 20250618052625NAL0001226867001, received 2025-06-18

Employer contributions per participant

$3,831

10th: $357median $1,32390th: $2,861

Higher than 96% of the 13,342 plans $1 to 10M that report it.

Source

= $540,204 / 141
Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250618052625NAL0001226867001, received 2025-06-18
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250618052625NAL0001226867001, received 2025-06-18

Employer share of total contributions

23.0%

10th: 11.9%median 28.9%90th: 43.6%

Higher than 31% of the 13,370 plans $1 to 10M that report it.

Source

= $540,204 / $2,353,538
Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250618052625NAL0001226867001, received 2025-06-18
total_contrib: Schedule H, line 2a(3); TOT_CONTRIB_AMT pos 72; filing 20250618052625NAL0001226867001, received 2025-06-18

Plan terms, as stated in Korro Bio Ops, Inc.'s SEC filings

Plan terms are not published in public filings.

Plan features

2E profit-sharing · 2F ERISA 404(c) plan · 2G fully participant-directed · 2J 401(k) feature · 2K 401(m) arrangement · 2S pre-approved plan document · 2T default investment (QDIA) · 3D IRS pre-approved plan · Form 5500, line 8a; TYPE_PENSION_BNFT_CODE pos 81; filing 20250618052625NAL0001226867001, received 2025-06-18

Full record, Korro Bio 401(k) Retirement Plan

FieldValueSource
Plan sponsorKORRO BIO INCForm 5500, Part II line 2a; SPONSOR_DFE_NAME pos 19; filing 20250618052625NAL0001226867001, received 2025-06-18
Plan nameKORRO BIO 401K RETIREMENT PLANForm 5500, line 1a; PLAN_NAME pos 16; filing 20250618052625NAL0001226867001, received 2025-06-18
Sponsor EIN / plan number83-1934068 / 001Form 5500, line 2b; SPONS_DFE_EIN pos 44; filing 20250618052625NAL0001226867001, received 2025-06-18
Plan typesingle-employerForm 5500, Part I line A; TYPE_PLAN_ENTITY_CD pos 4; filing 20250618052625NAL0001226867001, received 2025-06-18
Sponsor locationCAMBRIDGE, MAForm 5500, line 2a; SPONS_DFE_MAIL_US_STATE pos 25; filing 20250618052625NAL0001226867001, received 2025-06-18
Industry (business code)541700, Professional, scientific, and technical servicesForm 5500, line 2d; BUSINESS_CODE pos 46; filing 20250618052625NAL0001226867001, received 2025-06-18
Plan year2024-01-01 to 2024-12-31Form 5500, Part I plan year; FORM_PLAN_YEAR_BEGIN_DATE pos 2; filing 20250618052625NAL0001226867001, received 2025-06-18
Filing received2025-06-18Form 5500, EFAST2 receipt date; DATE_RECEIVED pos 102; filing 20250618052625NAL0001226867001, received 2025-06-18
Final filingnoForm 5500, Part I line B; FINAL_FILING_IND pos 8; filing 20250618052625NAL0001226867001, received 2025-06-18
Amended filingnoForm 5500, Part I line B; AMENDED_IND pos 7; filing 20250618052625NAL0001226867001, received 2025-06-18
Participants, beginning of year135Form 5500, line 5; TOT_PARTCP_BOY_CNT pos 71; filing 20250618052625NAL0001226867001, received 2025-06-18
Active participants100Form 5500, line 6a(2); TOT_ACTIVE_PARTCP_CNT pos 72; filing 20250618052625NAL0001226867001, received 2025-06-18
Participants, end of year149Form 5500, line 6f; TOT_ACT_RTD_SEP_BENEF_CNT pos 77; filing 20250618052625NAL0001226867001, received 2025-06-18
Participants with an account balance141Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250618052625NAL0001226867001, received 2025-06-18
Total assets, beginning of year$4,351,637Schedule H, Part I line 1f col (a); TOT_ASSETS_BOY_AMT pos 30; filing 20250618052625NAL0001226867001, received 2025-06-18
Total assets, end of year$6,377,671Schedule H, Part I line 1f col (b); TOT_ASSETS_EOY_AMT pos 61; filing 20250618052625NAL0001226867001, received 2025-06-18
Net assets, end of year$6,377,671Schedule H, line 1l col (b); NET_ASSETS_EOY_AMT pos 67; filing 20250618052625NAL0001226867001, received 2025-06-18
Total income$3,190,845Schedule H, Part II line 2d; TOT_INCOME_AMT pos 97; filing 20250618052625NAL0001226867001, received 2025-06-18
Net income$2,026,034Schedule H, line 2k; NET_INCOME_AMT pos 111; filing 20250618052625NAL0001226867001, received 2025-06-18
Employer contributions$540,204Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250618052625NAL0001226867001, received 2025-06-18
Participant contributions$1,413,944Schedule H, line 2a(1)(B); PARTICIPANT_CONTRIB_AMT pos 69; filing 20250618052625NAL0001226867001, received 2025-06-18
Other contributions (incl. rollovers)$399,390Schedule H, line 2a(1)(C); OTH_CONTRIB_RCVD_AMT pos 70; filing 20250618052625NAL0001226867001, received 2025-06-18
Total contributions$2,353,538Schedule H, line 2a(3); TOT_CONTRIB_AMT pos 72; filing 20250618052625NAL0001226867001, received 2025-06-18
Benefit payments$1,163,231Schedule H, line 2e(4); TOT_DISTRIB_BNFT_AMT pos 101; filing 20250618052625NAL0001226867001, received 2025-06-18
Total expenses (incl. benefit payments)$1,164,811Schedule H, line 2j; TOT_EXPENSES_AMT pos 110; filing 20250618052625NAL0001226867001, received 2025-06-18
Total administrative expenses$1,580Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250618052625NAL0001226867001, received 2025-06-18
Recordkeeping fees$1,580Schedule H, line 2i(3); OTH_RECORDKEEPING_FEES_AMT pos 160; filing 20250618052625NAL0001226867001, received 2025-06-18
Administrative expenses excluding investment management$1,580derived, admin_expenses (2i(12)) minus invst_mgmt_fees (2i(5)), floored at 0; filing 20250618052625NAL0001226867001, received 2025-06-18
Held in mutual funds$6,339,520Schedule H, line 1c(13) col (b); INT_REG_INVST_CO_EOY_AMT pos 55; filing 20250618052625NAL0001226867001, received 2025-06-18
Independent auditorCLIFTONLARSONALLEN LLPSchedule H, Part III line 3a; ACCOUNTANT_FIRM_NAME pos 116; filing 20250618052625NAL0001226867001, received 2025-06-18

Position = column in the DOL layout for form year 2024. Filing 20250618052625NAL0001226867001, received 2025-06-18.

Service providers paid directly by the plan

ProviderRelationshipService codesDirect compensationIndirect
ADP, INC.recordkeeperRECORD KEEPER 37 Participant loan processing; 50 Direct payment from the plan; 15 Recordkeeping and information management; 64 Recordkeeping fees $1,580yes

Schedule C Part I line 2: name (a), service codes (b), relationship (c), direct compensation paid by the plan (d), indirect compensation received (e). Filing 20250618052625NAL0001226867001, received 2025-06-18.

What changed since the 2023 plan year

Figure20232024Change
Total assets$4,351,637$6,377,67146.6%
Participants with a balance12514112.8%
Administrative expenses$1,075$1,58047.0%
Recordkeeping fees per participantnot reported$11.21
Employer contributions$600,498$540,204-10.0%

Prior filing 20240614153311NAL0017100435001, received 2024-06-14; the plan years are contiguous.

Alerts, claims and corrections

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Sponsor name as filed: KORRO BIO INC; SEC registrant: Korro Bio Ops, Inc. (CIK 1778316, matched by EIN).