Pay vs Performance Disclosure [Table]

Named Executive Officers, Footnote [Text Block]

As a result of a PEO transition that occurred in 2022, two PEO’s are reported in the table. In fiscal years 2020 and 2021, Dante Parrini was the PEO (listed as “Former PEO”). On August 24, 2022, Mr. Parrini ceased to serve as PEO and Thomas Fahnemann was appointed PEO (listed as “Current PEO”). The non-PEO NEOs reported in fiscal years 2020 and 2021 are Samuel Hillard, Christopher Astley, Wolfgang Laures, and Eileen Beck. The non-PEO NEOs reported in fiscal year 2022 are Ramesh Shettigar, Samuel Hillard, Christopher Astley, Wolfgang Laures, and David Elder.

Adjustment To PEO Compensation, Footnote [Text Block]

The following table sets forth the amounts deducted from and added to SCT total compensation pursuant to Item 401(v) of Regulation S-K to determine CAP for the Current PEO, Former PEO, and non-PEO NEOs in 2022:


	2022	Current PEO(1)	Former PEO(1)	Avg. Non-PEO NEOs(2)
	SCT Total Compensation	$2,400,576	$9,007,845	$1,153,086
‘-	Aggregate Change in Pension Value Reported in SCT	$0	$(284,000)	$(800)
‘-	Amounts reported in SCT for Stock Awards	$(1,750,800)	$(2,999,988)	$(728,249)
‘+	Value of Service Cost Attributable to Executive under Pension(i)	$0	$0	$0
‘+	Value of Awards Granted in Covered Year, Outstanding and Unvested at Year- End	$807,600	$3,042,096	$267,133
‘+	Dividends Paid on Unvested Awards	$0	$241,203	$11,288
‘+/-	Change in Value of Awards Granted in Any Prior Year, Outstanding and Unvested at Year End	$0	$(753,193)	$(288,841)
‘+/-	Change in Value of Awards Granted in Any Prior Year, Vested During the Year	$0	$(581,355)	$(145,316)
‘-	Value of Awards Forfeited in Covered Year	$0	$(5,236,338)	$(313,786)
‘=	CAP	$1,457,376	$2,436,271	$(45,485)

i.) Glatfelter’s qualified pension plan was terminated in 2019 and liabilities were settled. In addition, the Company froze the benefits for all participants in the SERP effective December 31, 2019 so no additional benefits have accrued for any NEO under the SERP. The frozen SERP has been subsumed by a NQDCP. Based on these factors, Glatfelter did not have any service cost under the frozen SERP in 2022 for purposes of calculating CAP.

7.) The following table sets forth the amounts deducted from and added to SCT total compensation pursuant to Item 401(v) of Regulation S-K to determine CAP for the Former PEO and non-PEO NEOs in 2021:


	2021	Former PEO(1)	Avg. Non-PEO NEOs(2)
	SCT Total Compensation	$4,611,728	$1,070,643
‘-	Aggregate Change in Pension Value Reported in SCT	$(413,000)	$(250)
‘-	Amounts reported in SCT for Stock Awards	$(1,889,987)	$(356,863)
‘+	Value of Service Cost Attributable to Executive under Pension(i)	$0	$0
‘+	Value of Awards Granted in Covered Year, Outstanding and Unvested at Year- End	$1,545,525	$291,824
‘+	Dividends Paid on Unvested Awards	$216,167	$33,953
‘+/-	Change in Value of Awards Granted in Any Prior Year, Outstanding and Unvested at Year End	$(388,035)	$(73,789)
‘+/-	Change in Value of Awards Granted in Any Prior Year, Vested During the Year	$(815)	$(2,058)
‘-	Value of Awards Forfeited in Covered Year	$0	$0
‘=	CAP	$3,681,582	$963,460

i.) Glatfelter’s qualified pension plan was terminated in 2019 and liabilities were settled. In addition, the Company froze the benefits for all participants in the SERP effective December 31, 2019 so no additional benefits have accrued for any NEO under the SERP. The frozen SERP has been subsumed by a NQDCP. Based on these factors, Glatfelter did not have any service cost under the frozen SERP in 2021 for purposes of calculating CAP.

8.) The following table sets forth the amounts deducted from and added to SCT total compensation pursuant to Item 401(v) of Regulation S-K to determine CAP for the Former PEO and the non-PEO NEOs in 2020:


	2020	Former PEO(1)	Avg. Non-PEO NEOs(2)
	SCT Total Compensation	$4,561,385	$1,189,843
‘-	Aggregate Change in Pension Value Reported in SCT	$(265,000)	$(250)
‘-	Amounts reported in SCT for Stock Awards	$(1,767,347)	$(336,745)
‘+	Value of Service Cost Attributable to Executive under Pension(i)	$0	$0
‘+	Value of Awards Granted in Covered Year, Outstanding and Unvested at Year- End	$1,661,121	$316,504
‘+	Dividends Paid on Unvested Awards	$192,758	$28,803
‘+/-	Change in Value of Awards Granted in Any Prior Year, Outstanding and Unvested at Year End	$(288,619)	$(56,462)
‘+/-	Change in Value of Awards Granted in Any Prior Year, Vested During the Year	$(90,404)	$(12,753)
‘-	Value of Awards Forfeited in Covered Year	$0	$0
‘=	CAP	$4,003,894	$1,128,941

i.) Glatfelter’s qualified pension plan was terminated in 2019 and liabilities were settled. In addition, the Company froze the benefits for all participants in the SERP effective December 31, 2019 so no additional benefits have accrued for any NEO under the SERP. The frozen SERP has been subsumed by a NQDCP. Based on these factors, Glatfelter did not have any service cost under the frozen SERP in 2021 for purposes of calculating CAP.

Non-PEO NEO Average Compensation Actually Paid Amount

$ (45,485)

963,460

1,128,941

Equity Valuation Assumption Difference, Footnote [Text Block]

5.) CAP, as required under SEC rules, reflects adjustments to the value of unvested and vested equity awards during the years shown in the table based on year-end stock prices, various accounting valuation assumptions, and projected performance modifiers but does not reflect actual amounts paid out for those awards. CAP generally fluctuates due to stock price achievement and varying levels of projected and actual achievement of performance goals. Valuations calculated on such dates are determined in accordance with the Company’s methodology used for financial reporting purposes. Equity awards issued by the Company during the covered periods are subject to certain market conditions and have been valued using a Monte Carlo simulation where applicable.

The table below summarizes the valuation assumptions for all covered grant cycles.


Assumption	2018-2020	2019-2021		2020-2022		2021-2023		2022-2024	Current PEO Sign-on 2022-2024(a)
Valuation Date	12/31/2019	12/31/2019	12/31/2020	12/31/2020	12/31/2021	12/31/2021	12/31/2022	12/31/2022	12/31/2022
Simulation Period	1.0 Year	2.0 Years	1.0 Year	2.0 Years	1.0 Year	2.0 Years	1.0 Year	2.0 Years	2.64 Years
Valuation Price	$18.30	$18.30	$16.38	$16.38	$17.20	$17.20	$2.78	$2.78	$2.78
Beginning TSR Price	$21.44	$9.76	$9.76	$18.30	$18.30	$16.77	$16.77	$17.14	N/A
TSR %ile Ranking (start of period to valuation date)	33rd %ile	95th %ile	82nd %ile	40th %ile	34th %ile	27th %ile	3rd %ile	1st %ile	N/A
Interest Rate (term matches sim period)	1.59%	1.58%	0.10%	0.13%	0.39%	0.73%	4.73%	4.41%	4.29%
Volatility (term matches sim period)	33.5%	43.9%	58.0%	47.4%	31.6%	46.7%	73.3%	56.7%	53.6%

a.) For the Current PEO, the Initial PSA Award is based on absolute stock price performance and relative comparison is unavailable.

Compensation Actually Paid vs. Net Income [Text Block]

Chart 3 : Alignment of CAP with Company Net Income:

For the three-year period ended December 31, 2022, CAP to the Former PEO and average CAP to the non-PEO NEOs decreased by 39% and 104%, respectively, as compared to a significant decrease in the Company’s Net Income over the same time period.

Total Shareholder Return Vs Peer Group [Text Block]

Chart 2 : Comparison of Company TSR and Peer Group TSR:

The S&P 600 Small Cap Materials Index, as the Company’s peer group for purposes of Item 201(e) of Regulation S-K, was utilized for purposes of calculating peer group TSR. The TSR for the peer group disclosed in the chart above increased by 11% for the three-year period ending December 31, 2022, as compared to the Company's TSR, which decreased by 82% over the same time period.