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FAIR VALUE MEASUREMENTS
 12 Months Ended
Dec. 31, 2024
EBP 002  
EBP, Investment, Fair Value and NAV [Line Items]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
For a discussion of fair value accounting and the classification of assets within the fair value hierarchy, see the “Fair Value Measurements of Assets” section of Note 2.

Plan Assets within the Fair Value Hierarchy as of December 31, 2024
Level 1Level 2Level 3OtherTotal
Equities
Corporate Stocks$554,966,516 $— $— $— $554,966,516 
AEP Stock254,007,692 — — — 254,007,692 
Subtotal Equities808,974,208 — — — 808,974,208 
Common/Collective Trusts
Mellon Capital Small Cap Stock Index Fund (a)— — — 169,951,861 169,951,861 
Mellon Capital Mid Cap Stock Index Fund (a)— — — 459,321,305 459,321,305 
Mellon Capital Stock Index Fund (a)— — — 1,429,311,150 1,429,311,150 
Mellon Capital International Stock Index Fund (a)— — — 690,699,519 690,699,519 
Mellon Capital Aggregate Bond Index Fund (a)— — — 511,889,594 511,889,594 
Mellon Capital Treasury Inflation-Protected Securities Fund (a)
— — — 24,183,840 24,183,840 
JPMorgan Strategic Property Fund (a)— — — 84,071,443 84,071,443 
Mellon Capital Emerging Markets Stock Index Fund (a)
— — — 65,013,298 65,013,298 
William Blair Large Cap Growth I (a)— — — 214,753,054 214,753,054 
Sands Capital International Growth CIT (a)— — — 22,073,747 22,073,747 
MetWest Total Return Bond Fund (a)— — — 59,886,326 59,886,326 
Subtotal Common/Collective Trusts— — — 3,731,155,137 3,731,155,137 
Self-Directed Brokerage Account (a)107,255,995 — — 13,195,992 120,451,987 
Registered Investment Companies22,131,794 — — — 22,131,794 
Money Market Fund36,776,191 — — — 36,776,191 
Total Assets Reflecting Investments at Fair Value$975,138,188 $— $— $3,744,351,129 $4,719,489,317 

(a)Amounts in “Other” column represent investments for which fair value is measured using net asset value per share as practical expedient.
Plan Assets within the Fair Value Hierarchy as of December 31, 2023
Level 1Level 2Level 3OtherTotal
Equities
Corporate Stocks$557,042,541 $— $— $— $557,042,541 
AEP Stock272,036,887 — — — 272,036,887 
Subtotal Equities829,079,428 — — — 829,079,428 
Common/Collective Trusts
Mellon Capital Small Cap Stock Index Fund (a)— — — 179,341,271 179,341,271 
Mellon Capital Mid Cap Stock Index Fund (a)— — — 456,261,518 456,261,518 
Mellon Capital Stock Index Fund (a)— — — 1,298,414,738 1,298,414,738 
Mellon Capital International Stock Index Fund (a)— — — 704,972,081 704,972,081 
Mellon Capital Aggregate Bond Index Fund (a)— — — 521,308,895 521,308,895 
Mellon Capital Treasury Inflation-Protected Securities Fund (a)
— — — 24,749,151 24,749,151 
JPMorgan Strategic Property Fund (a)— — — 68,468,634 68,468,634 
Mellon Capital Emerging Markets Stock Index Fund (a)
— — — 60,252,437 60,252,437 
Columbia Trust Focused Large Cap Growth Fund (a)
— — — 195,092,837 195,092,837 
Sands Capital International Growth CIT (a)— — — 25,623,845 25,623,845 
MetWest Total Return Bond Fund (a)— — — 65,185,142 65,185,142 
Subtotal Common/Collective Trusts— — — 3,599,670,549 3,599,670,549 
Self-Directed Brokerage Account (a)86,302,881 — — 15,361,054 101,663,935 
Registered Investment Companies24,523,069 — — — 24,523,069 
Money Market Fund47,714,108 — — — 47,714,108 
Total Assets Reflecting Investments at Fair Value$987,619,486 $— $— $3,615,031,603 $4,602,651,089 

(a)Amounts in “Other” column represent investments for which fair value is measured using net asset value per share as practical expedient.
The following tables set forth a summary of the Plan's investments measured at Net Asset Value as a practical expedient as of December 31, 2024 and 2023:

Fair Value Estimated Using Net Asset Value per Share as of December 31, 2024
Fair ValueRedemption
Frequency
(If currently
eligible)		Redemption
Notice Period
Mellon Capital Small Cap Stock Index Fund$169,951,861 Daily
Trade Date + 1
Mellon Capital Mid Cap Stock Index Fund459,321,305 Daily
Trade Date + 1
Mellon Capital Stock Index Fund1,429,311,150 Daily
Trade Date + 1
Mellon Capital International Stock Index Fund690,699,519 Daily
Trade Date + 1
Mellon Capital Aggregate Bond Index Fund511,889,594 Daily
Trade Date + 1
Mellon Capital Treasury Inflation-Protected Securities Fund
24,183,840 Daily
Trade Date + 1
JPMorgan Strategic Property Fund84,071,443 Quarterly30 Days
Mellon Capital Emerging Markets Stock Index Fund
65,013,298 Daily
Trade Date + 1
William Blair Large Cap Growth I214,753,054 Daily
Trade Date + 1
Sands Capital International Growth CIT22,073,747 Daily
Trade Date + 1
MetWest Total Return Bond Fund59,886,326 Daily
Trade Date + 1
Self-Directed Brokerage Account13,195,992  Daily
Trade Date + 1
Total Assets$3,744,351,129 

Fair Value Estimated Using Net Asset Value per Share as of December 31, 2023
Fair ValueRedemption
Frequency
(If currently
eligible)		Redemption
Notice Period
Mellon Capital Small Cap Stock Index Fund$179,341,271 Daily
Trade Date + 1
Mellon Capital Mid Cap Stock Index Fund456,261,518 Daily
Trade Date + 1
Mellon Capital Stock Index Fund1,298,414,738 Daily
Trade Date + 1
Mellon Capital International Stock Index Fund704,972,081 Daily
Trade Date + 1
Mellon Capital Aggregate Bond Index Fund521,308,895 Daily
Trade Date + 1
Mellon Capital Treasury Inflation-Protected Securities Fund
24,749,151 Daily
Trade Date + 1
JPMorgan Strategic Property Fund68,468,634 Quarterly30 Days
Mellon Capital Emerging Markets Stock Index Fund
60,252,437 Daily
Trade Date + 1
Columbia Trust Focused Large Cap Growth Fund195,092,837 Daily
Trade Date + 1
Sands Capital International Growth CIT25,623,845 Daily
Trade Date + 1
MetWest Total Return Bond Fund65,185,142 Daily
Trade Date + 1
Self-Directed Brokerage Account15,361,054 Daily
Trade Date + 1
Total Assets$3,615,031,603 

It is the Plan’s policy to record transfers in and transfers out of each level at the end of each reporting period. There have been no transfers between Level 1, Level 2, and Level 3 during the years ended December 31, 2024 and 2023.