Company: SOJE
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0000092122-25-000088
Chunk: 111

Company: SOUTHERN CO
Filing Date: 2025-11-03
Form: 424B5
Chunk 111
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 be pledged to the collateral agent for the Company’s benefit pursuant to the purchase contract and pledge agreement to secure your obligation to purchase shares of the Company’s common stock under the related purchase contracts. The rights of the holders of the Corporate Units and the Treasury Units with respect to the pledged securities will be subject to the Company’s security interest therein. No holder of Corporate Units or Treasury Units will be permitted to withdraw the pledged securities related to such Corporate Units or Treasury Units from the pledge arrangement except:

• in the case of Corporate Units, to substitute a Treasury security for the related RSN of each series, as provided under “Description of the Equity Units—Creating Treasury Units by Substituting a Treasury Security for the RSNs;”

• in the case of Treasury Units, to substitute an RSN of each series for the related Treasury security, as provided under “Description of the Equity Units—Recreating Corporate Units;” and

• upon early settlement, settlement through the payment of separate cash or termination of the related purchase contracts.

Subject to the Company’s security interest and the terms of the purchase contract and pledge agreement, each holder of a Corporate Unit (unless the Treasury portfolio has replaced the RSNs as a component of the Corporate Unit) will be entitled through the purchase contract agent and the collateral agent to all of the proportional rights and preferences of the related RSNs (including distribution, voting, redemption, repayment and liquidation rights). Each holder of Treasury Units and each holder of Corporate Units (if the Treasury portfolio has replaced the RSNs as a component of the Corporate Units) will retain beneficial ownership of the related Treasury securities or the applicable ownership interests in the Treasury portfolio, as applicable, pledged in respect of the related purchase contracts. The Company will have no interest in the pledged securities other than the Company’s security interest.

<div align='center'>S-64</div>

Except as described in “Certain Provisions of the Purchase Contract and Pledge Agreement—General,” upon receipt of distributions on the pledged securities, the collateral agent will distribute such payments to the purchase contract agent, which in turn will distribute those payments to the holders in whose names the Corporate Units or the Treasury Units are registered at the close of business on the record date for the distribution.

<div align='center'>S-65</div>

### CERTAIN PROVISIONS OF THE PURCHASE CONTRACT AND PLEDGE AGREEMENT
In this description of “Certain Provisions of the Purchase Contract and Pledge Agreement,” “Southern Company” and the “Company” refer