| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Olinger Emily | Chief People Services Officer | 121 SOUTH 13TH STREET, SUITE 100, LINCOLN | /s/ Philip J. Morgan, Attorney-in-Fact for Emily Olinger | 12 Mar 2026 | 0002022948 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NNI | Class A Common Stock | Tax liability | -111 | -2.4% | $131.23* | 4,428 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Tax liability | -50 | -1.1% | $131.23* | 4,378 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Award | +2,258 | +52% | $0.000000* | 6,636 | 10 Mar 2026 | Direct | F3, F4 | |
| transaction | NNI | Class A Common Stock | Award | +1,732 | +26% | $0.000000* | 8,368 | 10 Mar 2026 | Direct | F3, F5 | |
| transaction | NNI | Class A Common Stock | Tax liability | -509 | -6.1% | $132.87* | 7,859 | 10 Mar 2026 | Direct | F6, F7 |
| Id | Content |
|---|---|
| F1 | These shares were tax-withheld by the issuer to satisfy the reporting person's tax obligation resulting from the vesting of a previously reported grant of shares pursuant to Rule 16b-3(d). |
| F2 | Per share value assigned by the issuer to the tax withholding shares under the tax withholding arrangement, and based on the market closing price of the shares on March 10, 2026. |
| F3 | Includes (i) 64 shares issued pursuant to the issuer's Employee Share Purchase Plan and (ii) 2 shares acquired by the reporting person pursuant to the issuer's dividend reinvestment plan since March 12, 2025. |
| F4 | These restricted shares were awarded to the reporting person pursuant to the issuer's Restricted Stock Plan. The shares vest equally over a five-year period, with one-fifth of the amount vesting annually on March 10 of each year. |
| F5 | These shares were issued to the reporting person pursuant to the issuer's Restricted Stock Plan, as the annual personal performance-based incentive bonus compensation for 2025 paid in stock, which the reporting person became entitled to receive on March 10, 2026. |
| F6 | Shares that were tax-withheld by the issuer to satisfy the reporting person's tax obligation resulting from the March 10, 2026 award by the issuer of 1,732 shares of bonus compensation stock. |
| F7 | Per share value assigned by the issuer to the tax withholding shares under the tax withholding arrangement, and based on the average market closing price of the shares for February 27, 2026 through March 5, 2026. |
Exhibit List: Exhibit 24 - Power of Attorney