401k Record

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Ameren 401(k)

Recordkeeping fees per participant · Ameren Corporation Savings Investment Plan · plan year 2024

$34.37

Higher than 50% of the 790 plans over $1B that report it.

Source

= $396,408 / 11,535
Schedule H, line 2i(3); OTH_RECORDKEEPING_FEES_AMT pos 160; filing 20250905104138NAL0028746192001, received 2025-09-05
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250905104138NAL0028746192001, received 2025-09-05

10th: $6.72median $34.2890th: $56.58

Percentiles compare this plan with the Schedule H plans over $1B 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 2025-09-05.

Cost and contributions

Administrative expenses excluding investment management, per participant

$51.46

10th: $9.43median $44.4790th: $97.55

Higher than 61% of the 1,045 plans over $1B that report it.

Source

= $593,614 / 11,535
derived, admin_expenses (2i(12)) minus invst_mgmt_fees (2i(5)), floored at 0; filing 20250905104138NAL0028746192001, received 2025-09-05
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250905104138NAL0028746192001, received 2025-09-05

Administrative expenses per participant

$304.22

10th: $24.33median $70.0390th: $174.36

Higher than 96% of the 1,076 plans over $1B that report it.

Source

= $3,509,125 / 11,535
Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250905104138NAL0028746192001, received 2025-09-05
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250905104138NAL0028746192001, received 2025-09-05

Administrative expenses as a share of assets

0.109%

10th: 0.013%median 0.046%90th: 0.111%

Higher than 89% of the 1,076 plans over $1B that report it.

Source

= $3,509,125 / $3,209,433,257
Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250905104138NAL0028746192001, received 2025-09-05
assets_eoy: Schedule H, Part I line 1f col (b); TOT_ASSETS_EOY_AMT pos 61; filing 20250905104138NAL0028746192001, received 2025-09-05

Employer contributions per participant

$4,218

10th: $1,442median $3,74490th: $8,760

Higher than 58% of the 1,135 plans over $1B that report it.

Source

= $48,651,827 / 11,535
Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250905104138NAL0028746192001, received 2025-09-05
participants_with_balance: Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250905104138NAL0028746192001, received 2025-09-05

Employer share of total contributions

26.4%

10th: 19.8%median 33.4%90th: 47.5%

Higher than 27% of the 1,135 plans over $1B that report it.

Source

= $48,651,827 / $184,244,071
Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250905104138NAL0028746192001, received 2025-09-05
total_contrib: Schedule H, line 2a(3); TOT_CONTRIB_AMT pos 72; filing 20250905104138NAL0028746192001, received 2025-09-05

Plan terms, as stated in Ameren Corporation's SEC filings

Vesting

“The amounts in Participants’ accounts, including Company contributions, are always fully vested.”

Form 11-K filed 2026-06-26, for the year ended 2025-12-31 · plan description note, vesting · source document

Terms quoted from the filing for the year ended 2025-12-31. Figures cover plan year 2024. The plan document governs.

Plan features

2E profit-sharing · 2F ERISA 404(c) plan · 2H partially participant-directed · 2J 401(k) feature · 2K 401(m) arrangement · 2O ESOP-related feature · 2S pre-approved plan document · 2T default investment (QDIA) · 3H controlled-group sponsor · 3I · Form 5500, line 8a; TYPE_PENSION_BNFT_CODE pos 81; filing 20250905104138NAL0028746192001, received 2025-09-05

Full record, Ameren Corporation Savings Investment Plan

FieldValueSource
Plan sponsorAMEREN CORPORATIONForm 5500, Part II line 2a; SPONSOR_DFE_NAME pos 19; filing 20250905104138NAL0028746192001, received 2025-09-05
Plan nameAMEREN CORPORATION SAVINGS INVESTMENT PLANForm 5500, line 1a; PLAN_NAME pos 16; filing 20250905104138NAL0028746192001, received 2025-09-05
Sponsor EIN / plan number43-1723446 / 003Form 5500, line 2b; SPONS_DFE_EIN pos 44; filing 20250905104138NAL0028746192001, received 2025-09-05
Plan typesingle-employerForm 5500, Part I line A; TYPE_PLAN_ENTITY_CD pos 4; filing 20250905104138NAL0028746192001, received 2025-09-05
Sponsor locationST. LOUIS, MOForm 5500, line 2a; SPONS_DFE_MAIL_US_STATE pos 25; filing 20250905104138NAL0028746192001, received 2025-09-05
Industry (business code)221100, UtilitiesForm 5500, line 2d; BUSINESS_CODE pos 46; filing 20250905104138NAL0028746192001, received 2025-09-05
Plan year2024-01-01 to 2024-12-31Form 5500, Part I plan year; FORM_PLAN_YEAR_BEGIN_DATE pos 2; filing 20250905104138NAL0028746192001, received 2025-09-05
Filing received2025-09-05Form 5500, EFAST2 receipt date; DATE_RECEIVED pos 102; filing 20250905104138NAL0028746192001, received 2025-09-05
Final filingnoForm 5500, Part I line B; FINAL_FILING_IND pos 8; filing 20250905104138NAL0028746192001, received 2025-09-05
Amended filingnoForm 5500, Part I line B; AMENDED_IND pos 7; filing 20250905104138NAL0028746192001, received 2025-09-05
Participants, beginning of year15,203Form 5500, line 5; TOT_PARTCP_BOY_CNT pos 71; filing 20250905104138NAL0028746192001, received 2025-09-05
Active participants9,085Form 5500, line 6a(2); TOT_ACTIVE_PARTCP_CNT pos 72; filing 20250905104138NAL0028746192001, received 2025-09-05
Participants, end of year11,661Form 5500, line 6f; TOT_ACT_RTD_SEP_BENEF_CNT pos 77; filing 20250905104138NAL0028746192001, received 2025-09-05
Participants with an account balance11,535Form 5500, line 6g(2); PARTCP_ACCOUNT_BAL_CNT pos 78; filing 20250905104138NAL0028746192001, received 2025-09-05
Total assets, beginning of year$2,971,481,023Schedule H, Part I line 1f col (a); TOT_ASSETS_BOY_AMT pos 30; filing 20250905104138NAL0028746192001, received 2025-09-05
Total assets, end of year$3,209,433,257Schedule H, Part I line 1f col (b); TOT_ASSETS_EOY_AMT pos 61; filing 20250905104138NAL0028746192001, received 2025-09-05
Net assets, end of year$3,201,578,479Schedule H, line 1l col (b); NET_ASSETS_EOY_AMT pos 67; filing 20250905104138NAL0028746192001, received 2025-09-05
Total income$613,367,145Schedule H, Part II line 2d; TOT_INCOME_AMT pos 97; filing 20250905104138NAL0028746192001, received 2025-09-05
Net income$237,569,361Schedule H, line 2k; NET_INCOME_AMT pos 111; filing 20250905104138NAL0028746192001, received 2025-09-05
Employer contributions$48,651,827Schedule H, Part II line 2a(1)(A); EMPLR_CONTRIB_INCOME_AMT pos 68; filing 20250905104138NAL0028746192001, received 2025-09-05
Participant contributions$126,612,133Schedule H, line 2a(1)(B); PARTICIPANT_CONTRIB_AMT pos 69; filing 20250905104138NAL0028746192001, received 2025-09-05
Other contributions (incl. rollovers)$8,980,111Schedule H, line 2a(1)(C); OTH_CONTRIB_RCVD_AMT pos 70; filing 20250905104138NAL0028746192001, received 2025-09-05
Total contributions$184,244,071Schedule H, line 2a(3); TOT_CONTRIB_AMT pos 72; filing 20250905104138NAL0028746192001, received 2025-09-05
Benefit payments$372,194,251Schedule H, line 2e(4); TOT_DISTRIB_BNFT_AMT pos 101; filing 20250905104138NAL0028746192001, received 2025-09-05
Total expenses (incl. benefit payments)$375,797,784Schedule H, line 2j; TOT_EXPENSES_AMT pos 110; filing 20250905104138NAL0028746192001, received 2025-09-05
Total administrative expenses$3,509,125Schedule H, line 2i(12) total administrative expenses; TOT_ADMIN_EXPENSES_AMT pos 109; filing 20250905104138NAL0028746192001, received 2025-09-05
Contract administrator fees$0Schedule H, line 2i(2); CONTRACT_ADMIN_FEES_AMT pos 106; filing 20250905104138NAL0028746192001, received 2025-09-05
Recordkeeping fees$396,408Schedule H, line 2i(3); OTH_RECORDKEEPING_FEES_AMT pos 160; filing 20250905104138NAL0028746192001, received 2025-09-05
IQPA audit fees$0Schedule H, line 2i(4); IQPA_AUDIT_FEES_AMT pos 161; filing 20250905104138NAL0028746192001, received 2025-09-05
Investment advisory and management fees$2,915,511Schedule H, line 2i(5); INVST_MGMT_FEES_AMT pos 107; filing 20250905104138NAL0028746192001, received 2025-09-05
Administrative expenses excluding investment management$593,614derived, admin_expenses (2i(12)) minus invst_mgmt_fees (2i(5)), floored at 0; filing 20250905104138NAL0028746192001, received 2025-09-05
Held in master trusts$0Schedule H, line 1c(11) col (b); INT_MASTER_TR_EOY_AMT pos 53; filing 20250905104138NAL0028746192001, received 2025-09-05
Held in common/collective trusts$2,332,282,542Schedule H, line 1c(9) col (b); INT_COMMON_TR_EOY_AMT pos 51; filing 20250905104138NAL0028746192001, received 2025-09-05
Held in mutual funds$197,609,175Schedule H, line 1c(13) col (b); INT_REG_INVST_CO_EOY_AMT pos 55; filing 20250905104138NAL0028746192001, received 2025-09-05
Independent auditorCROWE LLPSchedule H, Part III line 3a; ACCOUNTANT_FIRM_NAME pos 116; filing 20250905104138NAL0028746192001, received 2025-09-05

Position = column in the DOL layout for form year 2024. Filing 20250905104138NAL0028746192001, received 2025-09-05.

Service providers paid directly by the plan

ProviderRelationshipService codesDirect compensationIndirect
STRATEGIC ADVISORS, INC.ADVISOR 27 Investment advisory (plan) $797,186no
FIDELITY INVESTMENTS INSTITUTIONALrecordkeeperRECORDKEEPER 37 Participant loan processing; 64 Recordkeeping fees; 65 Account maintenance fees $148,520yes
QDRO CONSULTANTS CO LLCCONSULTANT 16 Consulting (general) $5,700no

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 20250905104138NAL0028746192001, received 2025-09-05.

What changed since the 2023 plan year

Figure20232024Change
Total assets$2,971,481,023$3,209,433,2578.0%
Participants with a balance15,06311,535-23.4%
Administrative expenses$3,517,962$3,509,125-0.3%
Recordkeeping fees per participantnot reported$34.37
Employer contributions$55,018,432$48,651,827-11.6%

Prior filing 20241011111507NAL0012412995001, received 2024-10-11; the plan years are contiguous.

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Sponsor name as filed: AMEREN CORPORATION; SEC registrant: AMEREN CORP (CIK 1002910, matched by EIN; display name from the Form 11-K cover).