Company: MCHB
Filing Date: 2025-07-16
Form Type: 424B3
Source: 0001140361-25-026051
Chunk: 309

Company: Mechanics Bancorp
Filing Date: 2025-07-16
Form: 424B3
Chunk 309
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 for credit losses net of tax of $20.8 million, estimated transaction costs net of tax of $89.9 million and the bargain purchase gain of $108.3 million. |

| (l) | Net adjustment to interest income to recognize estimated discounted accretion attributable to recording HomeStreet’s loan portfolio at fair value as of the assumed closing date using an estimated life of 7 years. |

| (m) | Net adjustment to interest expense to recognize estimated discounted amortization attributable to recording HomeStreet’s debt at fair value as of transaction date. |

| (n) | Adjustment to reverse HomeStreet amortization and reflect amortization of acquired identifiable intangible assets based on amortization period of five to seven years using sum of the years digits method. |

| (o) | Net adjustment to interest expense to recognize estimated discounted amortization attributable to recording HomeStreet’s certificates at fair value as of transaction date. |

| (p) | Provision expense for estimated lifetime credit losses for non-PCD loans of $28.9 million to be recorded immediately following consummation of the merger. |

| (q) | Adjustment for the estimated bargain purchase gain of net assets acquired over consideration given. |

| (r) | Adjustment to reverse HomeStreet amortization and reflect amortization of acquired identifiable intangible assets based on amortization over an estimated life; 7 years for Demand Deposits, 5 years for Money Markets and 6 years for Savings using sum of the years digits method. Adjustments for estimated one time transaction costs consisting of rebranding, vendor breakage fees, employee related items such as change-in-control and severance, attorney fees and advisory fees. |

| (s) | Adjustment to recognize the tax impact related to pro forma adjustments at 28%. |

| (t) | Adjustment to eliminate Mechanics’ average common shares outstanding during the periods presented and recognize the issuance of approximately 202 million shares of HomeStreet common stock based on Mechanics’ approximately 64 thousand shares outstanding, and 19 million shares of HomeStreet common stock and the exchange ratio of 3,301.0920 applied to shares of outstanding Mechanics voting common stock and 330.1092 to shares of outstanding Mechanics non-voting common stock. |

| (u) | Adjustment to HomeStreet's DUS mortgage servicing rights which are carried at amortized cost of $5.7 million. |

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#### TABLE OF CONTENTS

### DESCRIPTION OF CAPITAL STOCK OF THE COMBINED COMPANY
As a result of the merger