FLR

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

Granted as restricted stock units that vested on May 6, 2026.

The sales reported on this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the reporting person on December 4, 2025.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.35 to $46.06, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

This Form 4/A amends the Form 4 filed by the Reporting Person on March 10, 2026 ("Original Filing"), which inadvertently omitted the Issuer's withholding of 680 shares of common stock to satisfy the tax withholding obligation resulting from the vesting of 2,798 restricted stock units held by the Reporting Person on March 6, 2026. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person. As of the date of the Original Filing, the Reporting Person directly owned 35,565 shares of Common Stock.

In connection with the vesting of 11,060 restricted stock units and 15,801 performance units held by the Reporting Person on March 6, 2026, the Issuer has withheld 9,261 shares of common stock to satisfy the resulting tax withholding obligation. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person.

This Form 4/A amends the Form 4 filed by the Reporting Person on March 10, 2026 ("Original Filing"), which inadvertently omitted the Issuer's withholding of 1,294 shares of common stock to satisfy the tax withholding obligation resulting from the vesting of 4,032 restricted stock units held by the Reporting Person on March 6, 2026. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person. As of the date of the Original Filing, the Reporting Person directly owned 25,777 shares of Common Stock.

In connection with the vesting of 7,658 restricted stock units held by the Reporting Person on March 6, 2026, the Issuer has withheld 1,929 shares of common stock to satisfy the resulting tax withholding obligation. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person.

In connection with the vesting of 10,458 restricted stock units and 17,381 performance units held by the Reporting Person on March 6, 2026, the Issuer has withheld 7,674 shares of common stock to satisfy the resulting tax withholding obligation. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person.

In connection with the vesting of 19,296 restricted stock units and 17,381 performance units held by the Reporting Person on March 6, 2026, the Issuer has withheld 14,435 shares of common stock to satisfy the resulting tax withholding obligation. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person.

This Form 4/A amends the Form 4 filed by the Reporting Person on March 10, 2026 ("Original Filing"), which inadvertently omitted the Issuer's withholding of 295 shares of common stock to satisfy the tax withholding obligation resulting from the vesting of 994 restricted stock units held by the Reporting Person on March 6, 2026. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person. As of the date of the Original Filing, the Reporting Person directly owned 17,147 shares of Common Stock.

In connection with the vesting of 86,946 restricted stock units and 155,628performance units held by the Reporting Person on March 6, 2026, the Issuer has withheld 92,243 shares of common stock to satisfy the resulting tax withholding obligation. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person.

This Form 4/A amends the Form 4 filed by the Reporting Person on March 10, 2026 ("Original Filing"), which inadvertently omitted the Issuer's withholding of 1,014 shares of common stock to satisfy the tax withholding obligation resulting from the vesting of 3,687 restricted stock units held by the Reporting Person on March 6, 2026. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person. As of the date of the Original Filing, the Reporting Person directly owned 25,609 shares of Common Stock.

This Form 4/A amends the Form 4 filed by the Reporting Person on March 10, 2026 ("Original Filing"), which inadvertently omitted the Issuer's withholding of 1,463 shares of common stock to satisfy the tax withholding obligation resulting from the vesting of 6,001 restricted stock units held by the Reporting Person on March 6, 2026. The withholding of the shares occurred automatically upon the vesting of the units, and as such, no investment decision was made by the Reporting Person. As of the date of the Original Filing, the Reporting Person directly owned 66,523.1910 shares of Common Stock.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.01 to $52.30, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $50.96 to $51.93, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The options vested in three equal annual installments beginning on March 6, 2022.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.37 to $53.32, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.92 to $53.31, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The options vested in three equal annual installments beginning on March 6, 2017.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.91 to $53.20, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The options vested in three equal annual installments beginning on March 6, 2017.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.31 to $53.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units, 933 of which vest in three equal annual installments beginning on March 6, 2027, and 932 of which vest in total on March 6, 2029.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

The options vested in three equal annual installments beginning on March 6, 2017.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

Granted as restricted stock units which vest in three equal annual installments beginning on March 6, 2027.

The options vested in three equal annual installments beginning on March 6, 2017.

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $52.17 to $53.10, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.