Pay Versus Performance

Year	Summary Compensation Table Total for PEO #1⁽¹⁾	Summary Compensation Table Total for PEO #2⁽²⁾	Compensation Actually Paid to PEO #1⁽³⁾	Compensation Actually Paid to PEO #2⁽³⁾	Average Summary Compensation Table Total for Non-PEO NEOs⁽⁴⁾	Average Compensation Actually Paid to Non-PEO NEOs⁽⁵⁾	Value of Initial Fixed $100 Investment Based On:		Net Income	Adj. EBITDA ($ in thousands)
Year	Summary Compensation Table Total for PEO #1⁽¹⁾	Summary Compensation Table Total for PEO #2⁽²⁾	Compensation Actually Paid to PEO #1⁽³⁾	Compensation Actually Paid to PEO #2⁽³⁾		Average Compensation Actually Paid to Non-PEO NEOs⁽⁵⁾	Total Shareholder Return⁽⁶⁾	Peer Group Total Shareholder Return	Net Income	Adj. EBITDA ($ in thousands)
(a)	(b)	(bb)	(c)		(d)	(e)	(f)	(g)	(h)	(i)
2022	2,637,822	537,231	1,227,258	483,793	797,875	597,384	3	108	(493,047)	6,712
2021	2,943,057	1,145,602	4,448,222	1,153,662	901,810	910,686	34	112	(782,028)	39,771

(1)

Represents the total compensation paid to Sharon Vitti, our current Principal Executive Officer (“PEO” #1) since April 28, 2022. The dollar amounts reported in column (b) are the amounts of total compensation reported for Ms. Vitti in the “Total” column of the Summary Compensation Table (“SCT”). Former Chief Executive Officer, Labeed Diab, stepped down effective August 7, 2021.

(2)

Represents the total compensation paid to John Larsen, our prior Principal Executive Officer (“PEO” #2). The dollar amounts in column (bb) are the amounts of total compensation reported for Mr. Larsen in the “Total” column of the Summary Compensation Table (“SCT”). John Larsen became ATI’s Executive Chairman on August 9, 2021, August 30, 2021 through April 27, 2022, he was acting CEO.

(3)	The dollar amounts reported in column (c) represent the amount of “compensation actually paid” (“CAP”) to the PEO computed in accordance with Item 402(v) of Regulation S-K, adjustments were made to the PEO’s total compensation for each year to determine the CAP.

(4)

The dollar amounts reported in column (d) represent the average of the amounts for the Company’s NEOs as a group (excluding the PEO) in the “Total” column of the SCT. For 2022, the Non-PEO NEOs were Joseph Jordan, Ray Wahl, Augustus Oakes, Joseph Zavalishin, Gary Carlson, and Joanne Fong. For 2021, the Non-PEO NEOs were Joseph Jordan, Ray Wahl, Diana Chafey, Joseph Zavalishin, and Augustus Oakes.

(5)

The dollar amount reported in column (e) represents the average amount of “compensation actually paid” to the Non-PEO NEOs as a group, as computed in accordance with Item 402(v) of Regulation S-K, adjustments were made to average total compensation for the Non-PEO NEOs as a group for each year to determine the compensation actually paid.

(6)	TSR calculation start date is 6/17/21 (rather than 1/1/21) since that is the date our Class A common stock began trading on the NYSE following the Business Combination / de-SPAC.

PEO #1 SCT Total TO CAP Reconciliation
Year	Reported Summary Compensation Table Total for PEO ($)	Minus: Reported Summary Compensation Table Value of Equity Awards ($)	Plus: Equity Award Adjustments ($)	Plus: Reported Change in Pension Value Deferred Compensation Earnings in Summary Compensation Table ($)	Plus: Pension Benefit Adjustments ($)	Compensation Actually Paid to PEO ($)
2022	2,637,822	1,701,063	290,499	—	—	1,227,258
2021	2,943,057	—	—	1,505,165	—	4,448,222

PEO #2 SCT Total TO CAP Reconciliation
Year	Reported Summary Compensation Table Total for PEO ($)	Minus: Reported Summary Compensation Table Value of Equity Awards ($)	Plus: Equity Award Adjustments ($)	Plus: Reported Change in Pension Value Deferred Compensation Earnings in Summary Compensation Table ($)	Plus: Pension Benefit Adjustments ($)	Compensation Actually Paid to PEO ($)
2022	537,231	128,696	75,258	—	—	483,793
2021	1,145,602	590,085	598,145	—	—	1,153,662

Equity Award Adjustments PEO #1
Year	Year End Fair Value of Awards Granted in the Year ($)	Year over Year Change in Fair Value of Outstanding and Unvested Awards ($)	Fair Value as of Vesting Date of Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Awards Granted in Prior Years that Vested in the Year ($)	Fair Value as of Prior Year End of Equity Awards Granted in Prior Years that Failed to Vest in the Covered Year	Dollar Value of Dividends / Earnings Paid on Equity Awards in the Covered Year	Total Equity Award Adjustments ($)
2022	290,499	—	—	—	—	—	290,499
2021	—	—	—	—	—	—	—

Equity Award Adjustments PEO #2
Year	Year End Fair Value of Awards Granted in the Year ($)	Year over Year Change in Fair Value of Outstanding and Unvested Awards ($)	Fair Value as of Vesting Date of Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Awards Granted in Prior Years that Vested in the Year ($)	Fair Value as of Prior Year End of Equity Awards Granted in Prior Years that Failed to Vest in the Covered Year	Dollar Value of Dividends / Earnings Paid on Equity Awards in the Covered Year	Total Equity Award Adjustments ($)
2022	19,648	24,419	—	31,191	—	—	75,258
2021	598,145	—	—	—	—	—	598,145

Average Non-PEO SCT Total TO CAP Reconciliation
Year	Reported Summary Compensation Table Total for PEO ($)	Minus: Reported Summary Compensation Table Value of Equity Awards ($)	Plus: Equity Award Adjustments ($)	Plus: Reported Change in Pension Value Deferred Compensation Earnings in Summary Compensation Table ($)	Plus: Pension Benefit Adjustments ($)	Compensation Actually Paid to PEO ($)
2022	797,875	294,816	99,041	(4,716)	—	597,384
2021	901,810	369,679	374,094	4,462	—	910,686

Equity Award Adjustments
Year	Year End Fair Value of Awards Granted in the Year ($)	Year over Year Change in Fair Value of Outstanding and Unvested Awards ($)	Fair Value as of Vesting Date of Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Awards Granted in Prior Years that Vested in the Year ($)	Fair Value as of Prior Year End of Equity Awards Granted in Prior Years that Failed to Vest in the Covered Year	Dollar Value of Dividends / Earnings Paid on Equity Awards in the Covered Year	Total Equity Award Adjustments ($)
2022	45,487	41,839	—	11,715	—	—	99,041
2021	374,094	—	—	—	—	—	374,094

Named Executive Officers, Footnote [Text Block]

(4)

The dollar amounts reported in column (d) represent the average of the amounts for the Company’s NEOs as a group (excluding the PEO) in the “Total” column of the SCT. For 2022, the Non-PEO NEOs were Joseph Jordan, Ray Wahl, Augustus Oakes, Joseph Zavalishin, Gary Carlson, and Joanne Fong. For 2021, the Non-PEO NEOs were Joseph Jordan, Ray Wahl, Diana Chafey, Joseph Zavalishin, and Augustus Oakes.

Non-PEO NEO Average Total Compensation Amount

$ 797,875

$ 901,810

Adjustment to Non-PEO NEO Compensation Footnote [Text Block]

(5)

The dollar amount reported in column (e) represents the average amount of “compensation actually paid” to the Non-PEO NEOs as a group, as computed in accordance with Item 402(v) of Regulation S-K, adjustments were made to average total compensation for the Non-PEO NEOs as a group for each year to determine the compensation actually paid.

Average Non-PEO SCT Total TO CAP Reconciliation
Year	Reported Summary Compensation Table Total for PEO ($)	Minus: Reported Summary Compensation Table Value of Equity Awards ($)	Plus: Equity Award Adjustments ($)	Plus: Reported Change in Pension Value Deferred Compensation Earnings in Summary Compensation Table ($)	Plus: Pension Benefit Adjustments ($)	Compensation Actually Paid to PEO ($)
2022	797,875	294,816	99,041	(4,716)	—	597,384
2021	901,810	369,679	374,094	4,462	—	910,686

Equity Award Adjustments
Year	Year End Fair Value of Awards Granted in the Year ($)	Year over Year Change in Fair Value of Outstanding and Unvested Awards ($)	Fair Value as of Vesting Date of Awards Granted and Vested in the Year ($)	Year over Year Change in Fair Value of Awards Granted in Prior Years that Vested in the Year ($)	Fair Value as of Prior Year End of Equity Awards Granted in Prior Years that Failed to Vest in the Covered Year	Dollar Value of Dividends / Earnings Paid on Equity Awards in the Covered Year	Total Equity Award Adjustments ($)
2022	45,487	41,839	—	11,715	—	—	99,041
2021	374,094	—	—	—	—	—	374,094

Peer Group Total Shareholder Return Amount

108

112

Company Selected Measure Amount

6,712,000

39,771,000

PEO Total Compensation Amount

$ 2,637,822

PEO Total Compensation Amount

537,231

$ 1,145,602

PEO Total Compensation Amount

2,943,057