| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kruger James D | Chief Financial Officer | 121 SOUTH 13TH STREET, SUITE 100, LINCOLN | /s/ Philip J. Morgan, Attorney-in-Fact for James D. Kruger | 12 Mar 2026 | 0001593432 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NNI | Class A Common Stock | Tax liability | -795 | -1.4% | $131.23* | 57,710 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Tax liability | -356 | -0.62% | $131.23* | 57,354 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Tax liability | -322 | -0.56% | $131.23* | 57,032 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Tax liability | -135 | -0.24% | $131.23* | 56,897 | 10 Mar 2026 | Direct | F1, F2, F3 | |
| transaction | NNI | Class A Common Stock | Award | +7,527 | +13% | $0.000000* | 64,424 | 10 Mar 2026 | Direct | F3, F4 | |
| transaction | NNI | Class A Common Stock | Award | +8,656 | +13% | $0.000000* | 73,080 | 10 Mar 2026 | Direct | F3, F5 | |
| transaction | NNI | Class A Common Stock | Tax liability | -3,702 | -5.1% | $132.87* | 69,378 | 10 Mar 2026 | Direct | F6, F7 | |
| holding | NNI | Class A Common Stock | 6,800 | 10 Mar 2026 | By GRAT | F8 | |||||
| holding | NNI | Class A Common Stock | 6,800 | 10 Mar 2026 | By GRAT | F9 | |||||
| holding | NNI | Class A Common Stock | 5,000 | 10 Mar 2026 | By Trust | F10 | |||||
| holding | NNI | Class A Common Stock | 10,000 | 10 Mar 2026 | By Trust | F11 | |||||
| holding | NNI | Class A Common Stock | 10,000 | 10 Mar 2026 | By Trust | F12 | |||||
| holding | NNI | Class A Common Stock | 45,192 | 10 Mar 2026 | By revocable trust | F13 | |||||
| holding | NNI | Class A Common Stock | 45,000 | 10 Mar 2026 | By revocable trust | F14 | |||||
| holding | NNI | Class A Common Stock | 8,200 | 10 Mar 2026 | By spouse | F15 |
| 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, 2025. |
| F3 | Includes 4,538 shares issued pursuant to the issuer's Employee Share Purchase Plan. Also includes (i) 1,000 shares held jointly with spouse and (ii) 2,210 shares distributed to the reporting person by a grantor retained annuity trust ("GRAT") as discussed in footnote (8) below. |
| 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 8,656 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. |
| F8 | Shares held by a GRAT established by the reporting person on September 1, 2021, which reflect an annuity distribution from the trust to the reporting person of 2,210 shares on September 2, 2025. The reporting person continues to report beneficial ownership of all the shares held by the trust, but disclaims beneficial ownership of the shares held by the trust except to the extent of his pecuniary interest therein. |
| F9 | Shares held by a GRAT established by the reporting person's spouse on September 1, 2021, which reflect an annuity distribution from the trust to the reporting person's spouse of 2,210 shares on September 2, 2025. The reporting person continues to report beneficial ownership of all the shares held by the trust, but disclaims beneficial ownership of the shares held by the trust except to the extent of his pecuniary interest therein. |
| F10 | Shares held by a trust for the benefit of an adult son of the reporting person. The reporting person continues to report beneficial ownership of all the shares held by the trust, but disclaims beneficial ownership of the shares held by the trust except to the extent of his pecuniary interest therein. |
| F11 | Shares held by a trust for the benefit of another adult son of the reporting person. The reporting person continues to report beneficial ownership of all the shares held by the trust, but disclaims beneficial ownership of the shares held by the trust except to the extent of his pecuniary interest therein. |
| F12 | Shares held by a trust for the benefit of an adult daughter of the reporting person. The reporting person continues to report beneficial ownership of all the shares held by the trust, but disclaims beneficial ownership of the shares held by the trust except to the extent of his pecuniary interest therein. |
| F13 | Shares held by a revocable trust established by the reporting person, of which trust the reporting person is the sole trustee and sole lifetime beneficiary. |
| F14 | Shares held by a revocable trust established by the reporting person's spouse, of which trust the reporting person's spouse is the sole trustee and sole lifetime beneficiary. |
| F15 | Includes 2,210 shares distributed to the reporting person's spouse by a GRAT as discussed in footnote (9) above. |
Exhibit List: Exhibit 24 - Power of Attorney