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Form 8-K

sec.gov

8-K — Pinnacle Financial Partners, Inc.

Accession: 0002082866-26-000047

Filed: 2026-05-12

Period: 2026-05-12

CIK: 0002082866

SIC: 6021 (NATIONAL COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — pnfp-20260512.htm (Primary)

EX-99.1 (pinnacles-4proforma_123120.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: pnfp-20260512.htm · Sequence: 1

pnfp-20260512

0002082866false00020828662026-05-122026-05-120002082866us-gaap:CommonStockMember2026-05-122026-05-120002082866us-gaap:SeriesAPreferredStockMember2026-05-122026-05-120002082866us-gaap:SeriesEPreferredStockMember2026-05-122026-05-120002082866us-gaap:SeriesCPreferredStockMember2026-05-122026-05-12

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

May 12, 2026

Date of Report

(Date of Earliest Event Reported)

Pinnacle Financial Partners, Inc.

(Exact Name of Registrant as Specified in its Charter)

Georgia 001-43038 39-3738880

(State of Incorporation) (Commission File Number) (IRS Employer Identification No.)

3400 Overton Park Drive, Atlanta, Georgia 30339

(Address of principal executive offices) (Zip Code)

(706) 641-6500

(Registrant’s telephone number, including area code)

__________________________

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol Name of each exchange on which registered

Common Stock, $1.00 Par Value

PNFP

New York Stock Exchange

Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A

PNFP - PrA

New York Stock Exchange

Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series B

PNFP - PrB

New York Stock Exchange

Depositary Shares, each representing 1/40 interest in a Share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock Series C

PNFP - PrC

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events.

On January 1, 2026, Synovus Financial Corp., a Georgia corporation (“Synovus”) and Pinnacle Financial Partners, Inc., a Tennessee corporation (“Legacy Pinnacle”), completed their business combination transaction and each simultaneously merged with and into Pinnacle Financial Partners, Inc. (formerly Steel Newco Inc.), a Georgia corporation jointly owned by Synovus and Legacy Pinnacle (the “Company” and such mergers, collectively, the “Merger”), with the Company continuing as the surviving corporation in the Merger.

In order to provide an update to the unaudited pro forma condensed combined financial information of the Company previously filed with the Securities and Exchange Commission, the Company is filing as Exhibit 99.1 to this Current Report on Form 8-K, the unaudited pro forma condensed combined financial statements of Synovus and legacy Pinnacle, consisting of the unaudited pro forma condensed combined income statements of Synovus and legacy Pinnacle for the year ended December 31, 2025, giving effect to the Merger as if it had occurred on January 1, 2025, and the unaudited pro forma condensed combined balance sheet of Synovus and Legacy Pinnacle as of December 31, 2025, giving effect to the Merger as if it had occurred on December 31, 2025.

All the pro forma financial statements and other pro forma information included in this Current Report on Form 8-K have been prepared on the basis of certain assumptions and estimates and are subject to other uncertainties and does not purport to reflect what the Company’s actual results of operations or financial condition or this pro forma information would have been had the Merger been consummated on the dates assumed for purposes of such pro forma financial statements and information or to be indicative of the Company’s, Synovus’ or Legacy Pinnacle’s financial condition, results of operations or metrics as of or for any future date or period.

This Current Report on Form 8-K does not modify or update the consolidated financial statements of Synovus included in Synovus’s Annual Report on Form 10-K for the year ended December 31, 2025, or of Legacy Pinnacle included in Legacy Pinnacle’s Annual Report on Form 10-K for the year ended December 31, 2025, nor does it reflect any subsequent information or events.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

Exhibit No. Description

99.1

Unaudited Pro Forma Condensed Combined Financial Information

104 Cover Page Interactive Data File (formatted as Inline XBRL).

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, Pinnacle Financial Partners, Inc. has caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

PINNACLE FINANCIAL PARTNERS, INC.

Date: May 12, 2026

By: /s/ Allan E. Kamensky

Name: Allan E. Kamensky

Title: Executive Vice President Chief Legal Officer

EX-99.1

EX-99.1

Filename: pinnacles-4proforma_123120.htm · Sequence: 2

Document

Exhibit 99.1

UNAUDITED PRO FORMA

CONDENSED COMBINED FINANCIAL INFORMATION

The following unaudited pro forma condensed combined financial information and notes thereto have been prepared in accordance with Article 11 of Regulation S-X in order to give effect to the merger and the related transaction accounting adjustments (pro forma adjustments) described in the accompanying notes.

On January 1, 2026, Pinnacle Financial Partners, Inc. (“Pinnacle”) completed its merger pursuant to the Agreement and Plan of Merger (“Merger Agreement”) in which Synovus Financial Corp. (“Synovus”) and Pinnacle each merged with and into Steel Newco Inc. (“Newco”) simultaneously, with Newco continuing as the surviving corporation. In connection with the closing of the Merger, Newco changed its corporate name to Pinnacle Financial Partners, Inc. Upon completion of the merger, the separate corporate existence of each of Synovus and Pinnacle ceased, and Newco became the parent holding company of the combined organization.

Each share of common stock, par value $1.00 per share, of Pinnacle (“Pinnacle common stock”) outstanding immediately prior to the merger was converted into the right to receive one share of Newco (“Newco common stock”) and (b) each share of common stock, par value $1.00 per share, of Synovus (“Synovus common stock”) outstanding immediately prior to the merger was converted into the right to receive 0.5237 shares of Newco common stock. Holders of Synovus common stock received cash in lieu of fractional shares.

Each share of Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D, no par value, of Synovus (“Synovus series D preferred stock”), Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E, no par value, of Synovus (“Synovus series E preferred stock”) and 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B, no par value, of Pinnacle ("Pinnacle series B preferred stock"), was converted into the right to receive one share of an applicable newly created series of preferred stock of Newco.

The accompanying unaudited pro forma condensed combined balance sheet as of December 31, 2025, combines the historical consolidated balance sheets of Pinnacle and Synovus, giving effect to the merger as if it had been completed on December 31, 2025. The unaudited pro forma condensed combined income statement for the year ended December 31, 2025 combines the historical consolidated income statements of Pinnacle and Synovus, giving effect to the merger as if it had been completed on January 1, 2025.

The historical consolidated financial statements of Pinnacle and Synovus have been adjusted in the accompanying unaudited pro forma condensed combined financial information to give effect to pro forma events that are necessary to account for the merger, in accordance with U.S. GAAP. The unaudited pro forma adjustments are based upon available information and certain assumptions that Pinnacle (as the accounting acquirer) believes are reasonable. The following unaudited pro forma condensed combined financial information does not reflect the costs of any integration activities or benefits that may result from the realization of future cost savings from operating efficiencies. Certain reclassifications have also been made to align Pinnacle’s and Synovus’ historical financial statement presentation.

The following unaudited pro forma condensed combined financial information and related notes are based on and should be read in conjunction with (i) the historical audited consolidated financial statements of Pinnacle and the related notes included in Pinnacles’s Annual Report on Form 10-K for the year ended December 31, 2025, and (ii) the historical audited consolidated financial statements of Synovus and the related notes included in Synovus’ Annual Report on Form 10-K for the year ended December 31, 2025.

The unaudited pro forma condensed combined financial information is provided for illustrative information purposes only. The unaudited pro forma condensed combined financial information is not necessarily, and should not be assumed to be, an indication of the actual results that would have been achieved had the merger been completed as of the dates indicated or that may be achieved in the future.

The merger is being accounted for as a business combination using the acquisition method with Pinnacle as the accounting acquirer, as Newco was determined to not be substantive, in accordance with Accounting Standards Codification (“ASC”) Topic 805, Business Combinations. Under this method of accounting, the aggregate purchase consideration will be allocated to Synovus’ assets acquired and liabilities assumed based upon their estimated fair values at the date of completion of the merger. The process of valuing the net assets of Synovus immediately prior to the merger, as well as evaluating accounting policies for conformity, is preliminary. Any differences between the estimated fair value of the purchase consideration and the estimated fair value of the assets acquired and liabilities assumed will be recorded as goodwill.

The unaudited pro forma condensed combined financial information also does not consider any potential effects of changes in market conditions on revenues, expense efficiencies, restructuring, severance and retention expenses, asset dispositions, and share repurchases, among other factors. In addition, as explained in more detail in the accompanying notes, the preliminary

allocation of the pro forma purchase price reflected in the unaudited pro forma condensed combined financial information is subject to adjustment and may vary significantly from the actual purchase price allocation that will be recorded upon finalization of estimated fair values of the assets and liabilities acquired.

As of the date of this filing, Pinnacle is in the process of completing its valuation analysis and calculations in sufficient detail necessary to arrive at the required estimates of the fair market value of the Synovus assets to be acquired or liabilities to be assumed. Final adjustments may differ from the amounts reflected in the unaudited pro forma condensed combined financial information, and the differences may be material.

Further, Pinnacle is also in the process of identifying all adjustment necessary to conform Synovus’ accounting policies to Pinnacle’s accounting policies. As more information becomes available, differences could be identified between the accounting policies of the two companies that, when conformed, could have a material impact on the combined company’s financial information.

As a result of the foregoing, the pro forma adjustments are preliminary and are subject to change as additional information becomes available and as additional analysis is performed. The preliminary pro forma adjustments have been made solely for the purpose of providing the unaudited pro forma condensed combined financial information.

Fair value estimates related to the assets and liabilities from Synovus are subject to adjustment for up to one year after the closing date of the acquisition as additional information becomes available. Any changes in the fair values of the net assets or total purchase consideration as compared with the information shown in the unaudited pro forma condensed combined financial information may change the amount of the total purchase consideration allocated to goodwill and other assets and liabilities and may impact the combined company’s statement of income. The final purchase consideration allocation may be materially different than the preliminary purchase consideration allocation presented in the unaudited pro forma condensed combined financial information.

PINNACLE AND SUBSIDIARIES UNAUDITED PRO FORMA CONDENSED COMBINED

BALANCE SHEET AS OF DECEMBER 31, 2025

Pinnacle Synovus Pro Forma Note Pro Forma

in thousands

As Reported As Reported Adjustments 4 Combined

ASSETS

Cash and cash equivalents $ 3,565,082  $ 2,533,448  $ (207,716) A $ 5,890,814

Securities purchased under agreements to resell 96,395  4,257  —  100,652

Securities available for sale 6,566,683  7,411,072  —  13,977,755

Securities held to maturity 2,590,524  2,409,184  9,939  B 5,009,647

Loans held for sale 97,360  106,221  —  203,581

Loans 39,154,002  44,625,627  (914,037) C 82,865,592

Less: allowance for loan losses (441,540) (477,934) —  D (919,474)

Loans, net 38,712,462  44,147,693  (914,037) 81,946,118

Premises, equipment, and software, net 339,990  377,940  183,496  E 901,426

Goodwill 1,848,904  480,440  1,148,899  F 3,478,243

Core deposits and other intangible assets, net 29,715  23,809  1,086,191  G 1,139,715

Other assets 3,858,938  3,864,773  (44,924) H 7,678,787

Total assets $ 57,706,053  $ 61,358,837  $ 1,261,848  $ 120,326,738

LIABILITIES AND EQUITY

Deposits

Non-interest bearing $ 9,046,666  $ 11,201,939  $ —  $ 20,248,605

Interest-bearing 38,349,856  40,121,983  (8,330) I 78,463,509

Total deposits 47,396,522  51,323,922  (8,330) 98,712,114

Federal funds purchased, securities sold under repurchase agreements, and other short-term borrowings 316,447  48,848  —  365,295

Federal Home Loan Bank advances, subordinated debt, and other borrowings 2,205,033  2,456,442  45,187  J 4,706,662

Other liabilities 744,336  1,516,218  (2,620) K 2,257,934

Total liabilities 50,662,338  55,345,430  34,237  106,042,005

Shareholders' equity:

Preferred stock 217,126  537,145  27,155  L 781,426

Common stock 77,662  172,815  (99,591) L 150,886

Additional paid-in capital 3,144,104  4,008,677  2,997,560  L 10,150,341

Treasury stock —  (1,359,054) 1,359,054  L —

Retained earnings 3,727,788  3,261,845  (3,667,960) L 3,321,673

Accumulated other comprehensive income (loss), net (122,965) (628,261) 628,261  L (122,965)

Total shareholders' equity 7,043,715  5,993,167  1,244,479  14,281,361

Noncontrolling interest in subsidiary —  20,240  (16,868) M 3,372

Total equity 7,043,715  6,013,407  1,227,611  14,284,733

Total liabilities and equity $ 57,706,053  $ 61,358,837  $ 1,261,848  $ 120,326,738

See accompanying notes to unaudited pro forma condensed combined financial statements

PINNACLE AND SUBSIDIARIES UNAUDITED PRO FORMA CONDENSED COMBINED INCOME STATEMENT FOR THE YEAR ENDED DECEMBER 31, 2025

Pinnacle Synovus Pro Forma Note Pro Forma

in thousands, except per share data

As Reported As Reported Adjustments 5 Combined

Interest income:

Loans

$ 2,288,096  $ 2,657,750 $ 114,481  A $ 5,060,327

Securities 368,416  367,544  109,915  B 845,875

Other 139,120  90,873  —  229,993

Total interest income 2,795,632  3,116,167  224,396  6,136,195

Interest expense:

Deposits 1,127,179  1,109,023  —  2,236,202

Borrowings 115,020  133,153  (13,130) C 235,043

Other 5,172  774  —  5,946

Total interest expense 1,247,371  1,242,950  (13,130) 2,477,191

Net interest income 1,548,261  1,873,217  237,526  3,659,004

Provision for credit losses 107,245  68,871  240,530  D 416,646

Net interest income after provision for credit losses 1,441,016  1,804,346  (3,004) 3,242,358

Noninterest income:

Service charges on deposit accounts 71,130  100,655  —  171,785

Investment securities gains (losses), net (16,611) 704  —  (15,907)

Other non-interest revenue 452,071  435,033  —  887,104

Total noninterest income 506,590  536,392  —  1,042,982

Noninterest expense:

Salaries and other personnel expense 721,431  776,344  —  1,497,775

Equipment and occupancy 195,300  195,785  3,339  E 394,424

Merger-related expenses 21,666  42,261  275,499  F 339,426

Amortization of intangibles 5,608  2,627  168,693  G 176,928

Other noninterest expense 223,723  305,041  —  528,764

Total noninterest expense 1,167,728  1,322,058  447,531  2,937,317

Income before income tax expense

779,878  1,018,680  (450,535) 1,348,023

Income tax expense

138,013  228,488  (95,964) H 270,537

Net income 641,865  790,192  (354,571) 1,077,486

Less: Net income (loss) attributable to noncontrolling interest —  (1,788) 1,971  I 183

Net income attributable to shareholders 641,865  791,980  (356,542) 1,077,303

Less: Preferred stock dividends

15,192  45,325  —  60,517

Net income available to common shareholders

$ 626,673  $ 746,655  $ (356,542) $ 1,016,786

Net income per common share, basic

$ 8.15  $ 5.36  $ 6.80

Net income per common share, diluted

8.07  5.33  6.76

Weighted average common shares outstanding, basic

76,863  139,296  (66,557) J 149,602

Weighted average common shares outstanding, diluted

77,689  140,149  (67,410) J 150,428

See accompanying notes to unaudited pro forma condensed combined financial statements.

PINNACLE AND SUBSIDIARIES NOTES TO UNAUDITED

PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

Note 1. Basis of Presentation

The accompanying unaudited pro forma condensed combined financial information and related notes were prepared in accordance with Article 11 of Regulation S-X.

As discussed in Note 2, certain reclassifications were made to align Pinnacle’s and Synovus’ financial statement presentation.

The unaudited pro forma condensed combined financial information was prepared using the acquisition method of accounting in accordance with ASC 805, with Pinnacle as the accounting acquirer, using the fair value concepts defined in ASC Topic 820, Fair Value Measurement, and based on the historical financial statements of Pinnacle and Synovus. Under ASC 805, all assets acquired and liabilities assumed in a business combination are recognized and measured at their fair values as of the closing date, while transaction costs associated with the business combination are expensed as incurred. The excess of purchase consideration over the estimated fair value of assets acquired and liabilities assumed, if any, is allocated to goodwill.

The allocation of the aggregate purchase consideration depends upon certain estimates and assumptions,. As of the date of this filing, Pinnacle is in the process of completing its valuation analysis and calculations in sufficient detail necessary to arrive at the required estimates of the fair market value of the Synovus assets to be acquired or liabilities to be assumed. Final adjustments may differ from the amounts reflected in the unaudited pro forma condensed combined financial information, and the differences may be material.

The accompanying unaudited pro forma condensed combined balance sheet as of December 31, 2025 combines the historical consolidated balance sheets of Pinnacle and Synovus, giving effect to the merger as if it had been completed on December 31, 2025. The unaudited pro forma condensed combined income statements for the year ended December 31, 2025 combine the historical consolidated income statements of Pinnacle and Synovus, giving effect to the merger as if it had been completed on January 1, 2025.

The unaudited pro forma condensed combined financial information does not reflect any anticipated synergies or dis-synergies, operating efficiencies or cost savings that may result from the merger or any acquisition and integration costs that may be incurred. The pro forma adjustments represent management’s best estimates and are based upon currently available information and certain assumptions that Pinnacle believes are reasonable under the circumstances.

Note 2. Reclassification Adjustments

During the preparation of the unaudited pro forma condensed combined financial information, Pinnacle management performed an analysis of Synovus’ financial information to identify differences in accounting policies and differences in balance sheet and income statement presentation as compared to the presentation of Pinnacle. Certain changes to financial statement presentation have been made to conform Pinnacle’s and Synovus’ historical financial statement presentation.

Additionally, certain financial statement captions have been combined for purposes of presenting in condensed form in accordance with Article 11 of Regulation S-X.

Note 3. Preliminary Purchase Price Allocation

The following table summarizes the determination of the preliminary purchase price consideration. The value of the purchase price consideration paid by Pinnacle in shares of common stock upon consummation of the merger was

determined based on the closing price of Pinnacle common stock as of December 31, 2025, the last trading date prior to closing.

in thousands, except share and per share amounts

December 31, 2025

Synovus shares outstanding (i)

138,893,767

Exchange ratio

0.5237

Total Newco common stock shares to be issued

72,738,666

Price per share of Pinnacle common stock (i)

$ 95.41

Preliminary consideration for common stock

$ 6,939,996

Consideration for equity awards

71,205

Fair value of preferred stock issued

564,300

Cash for fractional shares

477

Total pro forma purchase price consideration

$ 7,575,978

Preliminary goodwill

$ 1,629,339

(i) Based on the total number of shares of Synovus common stock issued and outstanding as of December 31, 2025 and the closing price per share of Pinnacle common stock on December 31, 2025.

Pinnacle has performed a preliminary valuation analysis of the fair market value of Synovus’ assets to be acquired and liabilities to be assumed based upon available information and certain assumptions,which Pinnacle believes are reasonable under the circumstances. The purchase price adjustments relating to the unaudited pro forma condensed combined financial information are preliminary and subject to change as additional information becomes available and as additional analyses are performed. The following table summarizes the allocation of the preliminary purchase consideration to the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed of Synovus, as if the merger had been completed on December 31, 2025, with the excess recorded to goodwill:

in thousands

Synovus Net Assets at Fair Value

Assets acquired:

Cash and cash equivalents

$ 2,533,448

Securities purchased under agreements to resell 4,257

Investment securities

9,830,195

Loans held-for-sale

106,221

Loans, net

43,474,186

Premises, equipment, and software, net

561,436

Other intangible assets

1,110,000

Other assets

3,709,935

Total assets acquired

61,329,678

Liabilities assumed:

Deposits

51,315,592

Borrowings

2,550,477

Other liabilities 1,513,598

Total liabilities assumed

55,379,667

Non-controlling interest

3,372

Total liabilities and equity

55,383,039

Net assets acquired

5,946,639

Preliminary pro forma goodwill

1,629,339

Estimated preliminary purchase price consideration

$ 7,575,978

Note 4. Adjustments to the Unaudited Pro Forma Condensed Combined Balance Sheet

The following pro forma adjustments have been reflected in the Pro Forma Adjustments column in the accompanying unaudited pro forma condensed combined balance sheet. All adjustments are based on preliminary assumptions and valuations, which are subject to change once further analyses are performed and as additional information becomes available.

All taxable adjustments were calculated using a statutory tax rate of 21.3% to arrive at deferred tax asset or liability adjustments. Because the tax rate used for this unaudited pro forma condensed combined financial information is an estimate, it will likely vary from the actual rate in periods subsequent to the completion of the business combination and those differences may be material.

A.Adjustment to cash and cash equivalents for the payment of expected merger-related transaction and change in control costs.

B.Adjustment to securities classified as held to maturity to reflect the estimated fair value of the acquired investment securities. The adjustment includes the following:

December 31, 2025

in thousands

Reversal of historical Synovus premiums and discounts primarily related to the conversion of securities from available for sale to held to maturity $ 520,000

Estimate of fair value adjustment for held to maturity securities (510,061)

Net fair value pro forma adjustment $ 9,939

C.Adjustment to loans reflects estimated fair value adjustments, which include lifetime credit loss expectations for loans, current interest rates and liquidity. This fair value adjustment excludes certain immaterial loan portfolios such as credit cards. The adjustment includes the following:

December 31, 2025

in thousands

Reversal of net deferred origination fees and partial charge-offs on acquired loans $ 50,530

Estimate of lifetime credit losses on acquired loans (477,934)

Estimate of fair value related to current interest rate and liquidity (724,037)

Net fair value pro forma adjustments (1,151,441)

Gross up of Purchase Credit Deteriorated (“PCD”) loans for credit mark (1) 237,404

Net change to loans resulting from the merger

$ (914,037)

(1) Does not reflect Pinnacle’s adoption of Accounting Standards Update 2025-08 as of January 1, 2026, whereby non-PCD loans acquired in a business combination are deemed purchased seasoned loans with an allowance for credit loss established for the initial estimate of expected credit losses as of the acquisition date and recorded through a gross-up adjustment to the loans’ amortized cost basis similar to the accounting treatment for PCD loans and leases.

D.Adjustments to the allowance for loan losses include the following:

December 31, 2025

in thousands

Reversal of historical Synovus’ allowance for loan losses $ (477,934)

Estimate of lifetime credit losses for PCD loans 237,404

Net pro forma transaction accounting adjustments to the allowance for loan losses (240,530)

Establishment of the allowance for loan losses for non-PCD loans’ estimated lifetime losses 240,530

Net change to the allowance for loan losses resulting from the merger

$ —

E.Adjustment to premises, equipment and software, net to reflect the estimated fair value of acquired premises and equipment.

F.Eliminate the historical Synovus goodwill of $480.4 million at the closing date and record estimated goodwill associated with the merger of $1.6 billion.

G.Eliminate the historical Synovus other intangible assets of $23.8 million at the closing date and record an estimated core deposit intangible of $848.0 million and a wealth customer relationships intangible of $262.0 million related to the merger.

H.Adjustments to other assets include the following:

December 31, 2025

in thousands

Adjustment to reflect the decrease to deferred tax assets resulting from proforma fair value adjustments for acquired financial assets and liabilities $ (116,409)

Adjustment to reflect the preliminary estimated tax effect of other transaction adjustments 109,914

Adjustment to recognize leases at estimated fair value (8,010)

Write-downs of other Synovus assets (30,419)

Net pro forma transaction accounting adjustments to other assets $ (44,924)

I.Adjustment to deposits to eliminate Synovus’ fair value adjustments on certain hedged deposits.

J.Adjustment to Federal Home Loan Bank advances, subordinated debt, and other borrowings to reflect the reversal of Synovus’ premiums and discounts and the fair value of Synovus long-term debt.

K.Adjustments to other liabilities to reflect the elimination of Synovus deferred income liabilities.

L.Adjustments to shareholders’ equity consist of the following:

Preferred Stock Common Stock Additional Paid-in Capital Treasury Stock Retained Earnings Accumulated Other Comprehensive Income

in thousands

Pro forma transaction accounting adjustments:

Elimination of Synovus historical equity balances $ (537,145) $ (172,815) $ (4,008,677) $ 1,359,054  $ (3,261,845) $628,261

Issuance of shares of Newco Common Stock to Synovus common shareholders (1) —  72,739  6,867,257  —  —  —

Represents the estimated fair value of the Synovus series D and series E preferred stock and its conversion to Newco preferred stock (1) 564,300  —  —  —  —  —

Represents the estimated consideration for equity awards (1) —  —  71,205  —  —  —

Establishment of the allowance for loan losses for non-PCD loans estimated lifetime losses net of tax —  —  —  —  (189,297) —

Issuance of shares of Newco common stock related to change in control equity issuance (2) —  485  67,775  —  —  —

Represents after-tax transaction fees and expenses related to the merger (2) —  —  —  —  (216,818) —

Net pro forma transaction accounting adjustments to equity $ 27,155  $ (99,591) $ 2,997,560  $ 1,359,054  $ (3,667,960) $628,261

(1) Included as a component of preliminary purchase price consideration in Note 3.Preliminary Purchase Price Allocation.

(2) Adjustments to equity to reflect transaction costs directly attributable to the merger. These adjustments are not a component of purchase price consideration.

M.Adjustment to noncontrolling interest in subsidiary to reflect impact of purchase accounting adjustments related to Synovus noncontrolling interest.

Note 5. Adjustments to the Unaudited Pro Forma Condensed Combined Statement of Income

The following pro forma adjustments have been included in the Pro Forma Adjustments column to give effect as if the merger had been completed on January 1, 2025, in the accompanying unaudited pro forma condensed combined statements of income year ended December 31, 2025. All adjustments are based on preliminary assumptions and valuations, which are subject to change once further analyses are performed and as additional information becomes available.

All taxable adjustments were calculated using a statutory tax rate of 21.3%. The total effective tax rate of the combined company following the merger could be significantly different depending on the post-acquisition geographical mix of income and other factors. Because the tax rate used for this unaudited pro forma condensed combined financial information is an estimate, it will likely vary from the actual rate in periods subsequent to the completion of the business combination and those differences may be material.

A.Adjustments to interest income on loans of $114.5 million for the year ended year ended December 31, 2025, respectively, to record the estimated accretion of the discount on acquired loans and eliminate the accretion of net deferred origination fees. Pro forma accretion was estimated using the effective interest method over the life of the loan.

B.Adjustments to interest income on securities of $109.9 million for the year ended December 31, 2025, respectively, to record the estimated accretion of the fair value adjustments to acquired available for sale and held to maturity securities. Pro forma accretion was based on the use of straight-line methodology, over an estimated approximate life of 8 years.

C.Adjustment to interest expense on borrowings of $(13.1) million for the year ended December 31, 2025, respectively, to record the estimated amortization of the premium on long-term debt. Pro forma amortization was based on the use of straight-line methodology, using the remaining term of the acquired long-term debt.

D.Adjustment to record provision expense on Synovus’ non-PCD loans of $240.5 million.

E.Adjustment to equipment and occupancy expense of $3.3 million for the year ended December 31, 2025, respectively, to reflect increases of depreciation expense and decreases in rent expense as a result of estimated fair value on acquired owned and leased property. Depreciation and rent expense proforma adjustments were calculated using a straight-line methodology over the life of the individual owned and leased properties.

F.Adjustment to reflect estimated transaction costs of $275.5 million directly attributable to the merger, including change in control costs and legal and advisory fees.

G.Net adjustments to intangible amortization of $168.7 million for the year ended December 31, 2025, respectively, to eliminate Synovus amortization on other intangible assets and record estimated amortization of acquired other intangible assets. Core deposit intangibles will be amortized using the sum-of-the-years-digits method over ten years. Wealth customer relationship intangible assets will be amortized based on the use of straight-line

methodology over fourteen years.

Amortization Expense

Estimated Useful Life Year ended

Fair Value (years) December 31, 2025

in thousands

Core deposit intangible $ 848,000  10 $ 160,489

Wealth customer relationship intangible 262,000  14 18,714

$ 1,110,000  $ 179,203

Historical amortization expense (10,510)

Pro forma net adjustment to amortization $ 168,693

Amortization for next five years

2026 $ 162,384

2027 145,564

2028 128,744

2029 111,924

2030 95,104

H.Adjustment to income tax expense (benefit) to record the income tax effects of pro forma adjustments at the estimated combined statutory federal and state rate of 21.3%.

I.Adjustment to net income (loss) attributable to noncontrolling interest to record the effects of pro forma adjustments that relate to Synovus noncontrolling interest.

J.Adjustments to weighted-average shares of Pinnacle common stock outstanding to eliminate weighted average shares of Synovus common stock outstanding and record shares of Newco common stock outstanding, calculated using an exchange ratio of 0.5237 per share for all shares. The calculation of weighted average shares outstanding for both basic and diluted earnings per share assumes that the shares issuable related to the merger have been outstanding for the entire periods presented.

Pro forma basic weighed average shares Shares

December 31, 2025

in thousands

Historical Pinnacle weighted average shares outstanding, basic 76,863

Shares of Newco common stock to be issued to holders of Synovus common stock pursuant to the merger

72,739

Pro forma weighted average shares, basic 149,602

Historical Pinnacle weighted average shares outstanding, diluted 77,689

Shares of Newco common stock to be issued to holders of Synovus common stock pursuant to the merger

72,739

Pro forma weighted average shares, diluted 150,428

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