BDC · Belden Inc. · Insider Trading

The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025.

Represents a bona fide gift of 1,310 shares of stock from the Reporting Person to a donor advised fund.

On August 7, 2026, Mr. Anderson gifted 385 shares to a charitable organization.

Shares transferred to irrevocable trust in which the Reporting Person has no control or pecuniary interest.

Includes 6,625 shares held in trust for adult children. Reporting Person disclaims beneficial ownership of these shares as the beneficiaries are his adult children outside of his household and he has no pecuniary interest.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Shares acquired through the Belden Inc. 2021 Employee Stock Purchase Plan (the "Plan"). The Plan is broadly available to employees of Belden Inc. and its subsidiaries. Pursuant to the terms of the Plan, the purchase price is 85% of the lesser of (i) the price at the beginning of the offering period (January 1, 2026) or (ii) the price at the end of the offering period (June 30, 2026). Employees elect their level of participation and the purchases are funded via payroll deductions through the offering period.

Represents a grant of RSUs granted by the Company's Compensation Committee effective July 2, 2026. 25% of the RSUs will vest on July 2, 2027, 25% of the RSUs will vest on July 2, 2028 and 50% of the RSUs will vest on July 2, 2029. Additional terms apply in the event of the holder's termination, death, disability or retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Includes 6,625 shares held in trust for adult children. Reporting Person disclaims beneficial ownership of these shares as the beneficiaries are his adult children outside of his household and he has no pecuniary interest.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $160,000 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

Grant of Restricted Stock under the Company's 2021 Long Term Incentive Plan. Based on value of $222,500 divided by the closing price on the grant date, May 21, 2026 ($104.79). The restrictions associated with the shares are generally removed one year after the date of award, but are subject to accelerated removal under certain circumstances, including death, disability and retirement.

The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 22,435 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 23,669 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 7,457 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 7,868 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 3,949 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 4,167 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 4,113 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 4,340 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 820 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 865 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 5,479 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 5,781 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

On March 7, 2023, the Reporting Person received a grant of 4,655 performance stock units ("PSUs"). Following the three-year performance period, a conversion factor of 1.055 was approved by the Company's Compensation Committee and applied to the PSUs, resulting in an award of 4,912 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 11, 2026.

Shares withheld for tax purposes related to portion of March 7, 2023 restricted stock unit grant that vested on March 7, 2026. The resulting shares were delivered on March 11, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Shares withheld for tax purposes related to portion of February 26, 2025 restricted stock unit grant that vested on February 26, 2026. The resulting shares were delivered on March 2, 2026.

Pursuant to the Company's Stretch Achievement Share Award program, certain PSUs granted in 2022 and 2023 were subject to enhancement based on company performance from 2022 through 2024 (the "Prior PSUs") and the achievement of an adjusted earnings per share ("EPS") goal in 2025. Based on the Company's 2025 EPS of $7.54, for each share received in 2025 from the vesting and distribution of the Prior PSUs awardees received a supplemental distribution of 0.54 shares, subject to tax withholding. The number in this cell reflects the after-tax number of shares delivered to the Reporting Person on March 2, 2026.

Represents a grant of RSUs granted by the Company's Compensation Committee on February 25, 2026. 25% of the RSUs will vest on February 25, 2027, 25% of the RSUs will vest on February 25, 2028 and 50% of the RSUs will vest on February 25, 2029. Additional terms apply in the event of the holder's termination, death, disability or retirement.