
	Three Months Ended September 30, 2023						Three Months Ended September 30, 2022
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	413	$	(114)	$	299	$	639	$	(181)	$	458
Foreign currency translation adjustments	(1,204)		187		(1,017)		(3,016)		489		(2,527)
Unrealized loss in fair value of investments	(329)		74		(255)		(3,188)		678		(2,510)
Total other comprehensive loss	(1,120)		147		(973)		(5,565)		986		(4,579)
Less: Other comprehensive loss attributable to noncontrolling interests	(473)		—		(473)		(1,525)		—		(1,525)
Total other comprehensive loss attributable to Tutor Perini Corporation	$	(647)	$	147	$	(500)	$	(4,040)	$	986	$	(3,054)


	Nine Months Ended September 30, 2023						Nine Months Ended September 30, 2022
(in thousands)	Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount		Before-Tax Amount		Tax (Expense) Benefit		Net-of-Tax Amount
Other comprehensive income (loss):
Defined benefit pension plan adjustments	$	1,239	$	(343)	$	896	$	1,916	$	(543)	$	1,373
Foreign currency translation adjustments	(302)		63		(239)		(4,458)		798		(3,660)
Unrealized gain (loss) in fair value of investments	605		(123)		482		(11,086)		2,314		(8,772)
Total other comprehensive income (loss)	1,542		(403)		1,139		(13,628)		2,569		(11,059)
Less: Other comprehensive income (loss) attributable to noncontrolling interests	81		—		81		(2,677)		—		(2,677)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation	$	1,461	$	(403)	$	1,058	$	(10,951)	$	2,569	$	(8,382)

The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation and attributable to noncontrolling interests during the three and nine months ended September 30, 2023 and 2022 were as follows:


	Three Months Ended September 30, 2023
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2023	$	(32,040)	$	(6,920)	$	(6,519)	$	(45,479)
Other comprehensive loss before reclassifications	—		(484)		(329)		(813)
Amounts reclassified from AOCI	299		—		14		313
Total other comprehensive income (loss)	299		(484)		(315)		(500)
Balance as of September 30, 2023	$	(31,741)	$	(7,404)	$	(6,834)	$	(45,979)
Attributable to Noncontrolling Interests:
Balance as of June 30, 2023	$	—	$	(342)	$	(834)	$	(1,176)
Other comprehensive income (loss)	—		(533)		60		(473)
Balance as of September 30, 2023	$	—	$	(875)	$	(774)	$	(1,649)


	Nine Months Ended September 30, 2023
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2022	$	(32,637)	$	(7,241)	$	(7,159)	$	(47,037)
Other comprehensive income (loss) before reclassifications	—		(163)		244		81
Amounts reclassified from AOCI	896		—		81		977
Total other comprehensive income (loss)	896		(163)		325		1,058
Balance as of September 30, 2023	$	(31,741)	$	(7,404)	$	(6,834)	$	(45,979)
Attributable to Noncontrolling Interests:
Balance as of December 31, 2022	$	—	$	(799)	$	(931)	$	(1,730)
Other comprehensive income (loss)	—		(76)		157		81
Balance as of September 30, 2023	$	—	$	(875)	$	(774)	$	(1,649)


	Three Months Ended September 30, 2022
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of June 30, 2022	$	(36,951)	$	(6,568)	$	(5,444)	$	(48,963)
Other comprehensive loss before reclassifications	—		(1,238)		(2,337)		(3,575)
Amounts reclassified from AOCI	458		—		63		521
Total other comprehensive income (loss)	458		(1,238)		(2,274)		(3,054)
Balance as of September 30, 2022	$	(36,493)	$	(7,806)	$	(7,718)	$	(52,017)
Attributable to Noncontrolling Interests:
Balance as of June 30, 2022	$	—	$	190	$	(800)	$	(610)
Other comprehensive loss	—		(1,289)		(236)		(1,525)
Balance as of September 30, 2022	$	—	$	(1,099)	$	(1,036)	$	(2,135)


	Nine Months Ended September 30, 2022
(in thousands)	Defined Benefit Pension Plan		Foreign Currency Translation		Unrealized Gain (Loss) in Fair Value of Investments, Net		Accumulated Other Comprehensive Income (Loss)
Attributable to Tutor Perini Corporation:
Balance as of December 31, 2021	$	(37,866)	$	(5,787)	$	18	$	(43,635)
Other comprehensive loss before reclassifications	—		(2,019)		(7,832)		(9,851)
Amounts reclassified from AOCI	1,373		—		96		1,469
Total other comprehensive income (loss)	1,373		(2,019)		(7,736)		(8,382)
Balance as of September 30, 2022	$	(36,493)	$	(7,806)	$	(7,718)	$	(52,017)
Attributable to Noncontrolling Interests:
Balance as of December 31, 2021	$	—	$	542	$	—	$	542
Other comprehensive loss	—		(1,641)		(1,036)		(2,677)
Balance as of September 30, 2022	$	—	$	(1,099)	$	(1,036)	$	(2,135)

The significant items reclassified out of AOCI and the corresponding location and impact on the Condensed Consolidated Statements of Operations during the three and nine months ended September 30, 2023 and 2022 were as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
Component of AOCI:
Defined benefit pension plan adjustments(a)	$	413	$	639	$	1,239	$	1,916
Income tax benefit(b)	(114)		(181)		(343)		(543)
Net of tax	$	299	$	458	$	896	$	1,373

Unrealized loss in fair value of investment adjustments(a)	$	18	$	79	$	103	$	121
Income tax benefit(b)	(4)		(16)		(22)		(25)
Net of tax	$	14	$	63	$	81	$	96