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| Exhibits | | Previously Filed With File Number* | | As Exhibit | | | | |
| 4.22 | | 001-38086 Form 8-K (filed on June 15, 2018) | | 4.2 | | — | | Ninth Supplemental Indenture to the 2023 Notes Indenture, dated June 14, 2018, among the Guaranteeing Subsidiaries, the Company, the Subsidiary Guarantors and the Trustee |
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| 4.23 | | 001-33443 Form 8-K (filed on May 21, 2013) | | 4.1 | | — | | Form of 5.875% Senior Note due 2023 |
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| 4.24 | | 001-33443 Form 8-K (filed on October 30, 2014) | | 4.9 | | — | | 2024 7.625% Notes Indenture, dated October 27, 2014, among Dynegy Finance II, Inc. and the Trustee |
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| 4.25 | | 001-33443 Form 8-K (filed on April 7, 2015) | | 4.14 | | — | | First Supplemental Indenture to the 2024 7.625% Notes Indenture, dated April 1, 2015, between Dynegy and the Trustee |
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| 4.26 | | 001-33443 Form 8-K (filed on April 7, 2015) | | 4.15 | | — | | Second Supplemental Indenture to the 2024 7.625% Notes Indenture, dated April 1, 2015, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.27 | | 001-33443 Form 8-K (filed on April 8, 2015) | | 4.21 | | — | | Third Supplemental Indenture to the 2024 7.625% Notes Indenture, dated April 2, 2015, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.28 | | 001-33443 Form 10-Q (Quarter ended June 30, 2015) (filed on August 7, 2015) | | 4.3 | | — | | Fourth Supplemental Indenture to the 2024 7.625% Notes Indenture, dated May 11, 2015, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.29 | | 001-33443 Form 10-Q (Quarter ended September 30, 2015) (filed on November 5, 2015) | | 4.3 | | — | | Fifth Supplemental Indenture to the 2024 7.625% Notes Indenture, dated September 21, 2015, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.30 | | 001-33443 Form 10-K (Year ended December 31, 2016) (filed on February 24, 2017) | | 4.32 | | — | | Sixth Supplemental Indenture to the 2024 7.625% Notes Indenture, dated February 2, 2017, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.31 | | 001-33443 Form 10-K (Year ended December 31, 2016) (filed on February 24, 2017) | | 4.33 | | — | | Seventh Supplemental Indenture to the 2024 7.625% Notes Indenture, dated February 7, 2017, among Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.32 | | 001-38086 Form 8-K (filed on April 9, 2018) | | 4.39 | | — | | Eighth Supplemental Indenture to the 2024 7.625% Notes Indenture, dated April 9, 2018, among the Company, the Subsidiary Guarantors and the Trustee |
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| 4.33 | | 001-38086 Form 8-K (filed on June 15, 2018) | | 4.3 | | — | | Ninth Supplemental Indenture to the 2024 7.625% Notes Indenture, dated June 14, 2018, among the Guaranteeing Subsidiaries, the Company, the Subsidiary Guarantors and the Trustee |
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| 4.34 | | 001-33443 Form of 8-K (filed on October 30, 2014) | | 4.9 | | — | | Form of 7.625% Senior Note due 2024 |
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| 4.35 | | 001-33443 Form 8-K (filed on October 11, 2016) | | 4.1 | | — | | 2025 Notes Indenture, dated October 11, 2016, between Dynegy and the Trustee |
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| 4.36 | | 001-33443 Form 10-K (Year ended December 31, 2016) (filed on February 24, 2017) | | 4.35 | | — | | First Supplemental Indenture to the 2025 Notes Indenture, dated February 2, 2017, between Dynegy, the Subsidiary Guarantors and the Trustee |
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| 4.37 | | 001-33443 Form 10-K (Year ended December 31, 2016) (filed on February 24, 2017) | | 4.36 | | — | | Second Supplemental Indenture to the 2025 Notes Indenture, dated February 7, 2017, between Dynegy, the Subsidiary Guarantors and the Trustee |
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