What is the current annual D&A of ATO?

As of today, ATO annual D&A is $734.75M

What is 1-year change in ATO annual D&A?

ATO annual D&A is up +9.67% year-over-year

What is 3-year change in ATO annual D&A?

ATO annual D&A is up +37.17% over the past 3 years

How far is ATO annual D&A from its all-time high?

ATO annual D&A is currently at its all-time high

How does ATO annual D&A rank versus sector peers?

ATO annual D&A is higher than 62.96% of companies in Utilities sector

When is ATO next annual earnings release?

As of today, the next annual earnings release for ATO has not been scheduled

What is the current quarterly D&A of ATO?

As of today, ATO quarterly D&A is $194.65M

What is ATO quarterly D&A most recent change?

ATO quarterly D&A was up +4.83% on December 31, 2025

What is 1-year change in ATO quarterly D&A?

ATO quarterly D&A is up +7.82% year-over-year

How far is ATO quarterly D&A from its all-time high?

ATO quarterly D&A is currently at its all-time high

How does ATO quarterly D&A rank versus sector peers?

ATO quarterly D&A is higher than 63.11% of companies in Utilities sector

When is ATO next earnings release?

The next earnings release for ATO is on May 6, 2026

What is the current TTM D&A of ATO?

As of today, ATO TTM D&A is $748.86M

What is ATO TTM D&A most recent change?

ATO TTM D&A was up +1.92% on December 31, 2025

What is 1-year change in ATO TTM D&A?

ATO TTM D&A is up +9.18% year-over-year

How far is ATO TTM D&A from its all-time high?

ATO TTM D&A is currently at its all-time high

How does ATO TTM D&A rank versus sector peers?

ATO TTM D&A is higher than 63.11% of companies in Utilities sector

When is ATO next earnings release?

The next earnings release for ATO is on May 6, 2026

ATO Depreciation And Amortization History & Chart Since 1986

Annual D&A

$734.75M$64.77M+9.67%

September 30, 2025

Summary

Current Value: As of today, ATO annual D&A is $734.75M, up +9.67% on September 30, 2025
Historical Performance: ATO annual D&A is up +37.17% over the past 3 years, up +70.94% over the past 5 years
All-Time High Comparison: ATO annual D&A is currently at its all-time high
3-Year Low Comparison: ATO annual D&A is +37.17% above its 3-year low of $535.66M reached on an earlier date
Sector Comparison: ATO annual D&A is higher than 62.96% of companies in Utilities sector

Depreciation & Amortization Chart

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Performance

ATO Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
	Sep 30, 25	$734.75M	+9.7%	+37.2%	+70.9%	+238.7%
	Dec 31, 25	$194.65M	+7.8%	+33.3%	+68.8%	+246.6%
	Dec 31, 25	$748.86M	+9.2%	+35.2%	+70.2%	+241.6%
Price	Mar 4, 26	$185.08	+23.6%	+64.2%	+108.2%	+432.6%
	Sep 30, 25	$0.00	0.0%	0.0%	0.0%	0.0%
	Sep 30, 25	$3.50B	+12.2%	+2.2%	+57.9%	-22.6%
	Sep 30, 25	$439.04M	+13.4%	+24.6%	+57.5%	-33.3%
Annual Revenue	Sep 30, 25	$4.70B	+12.9%	+11.9%	+66.7%	-0.6%

Depreciation & Amortization Highs

ATO Annual D&A Highs Comparison
Period	High	Date	Current
3Y	$734.75M	Sep 30, 25	at high
5Y	$734.75M	Sep 30, 25	at high
All	$734.75M	Sep 30, 25	at high

Depreciation & Amortization Lows

ATO Annual D&A Lows Comparison
Period	Low	Date	Current
3Y	$535.66M	N/A	+37.2%
5Y	$429.83M	N/A	+70.9%
All	$5.35M	Sep 30, 86	>+9999.0%

Depreciation & Amortization History

Year	Value	Change
2025	$734.75M	+9.7%
2024	$669.97M	+10.9%
2023	$604.33M	+12.8%
2022	$535.66M	+12.1%
2021	$477.98M	+11.2%
2020	$429.83M	+9.8%
2019	$391.46M	+8.4%
2018	$361.08M	+13.0%
2017	$319.63M	+9.1%
2016	$293.10M	+6.2%
2015	$276.01M	+8.3%
2014	$254.96M	+7.3%
2013	$237.61M	-3.6%
2012	$246.58M	+5.8%
2011	$233.16M	+7.5%
2010	$216.96M	-0.1%
2009	$217.21M	+8.4%
2008	$200.44M	+0.8%
2007	$198.86M	+7.1%
2006	$185.60M	+4.3%

Year	Value	Change
2005	$178.01M	+84.2%
2004	$96.65M	+11.1%
2003	$87.00M	+6.8%
2002	$81.47M	+20.4%
2001	$67.66M	+1.1%
2000	$66.92M	+17.7%
1999	$56.87M	+19.6%
1998	$47.56M	+19.0%
1997	$39.97M	+91.7%
1996	$20.85M	+0.5%
1995	$20.74M	+10.1%
1994	$18.84M	+38.3%
1993	$13.62M	+0.4%
1992	$13.57M	+7.6%
1991	$12.60M	-19.2%
1990	$15.59M	+6.5%
1989	$14.64M	+32.7%
1988	$11.03M	+67.9%
1987	$6.57M	+22.9%
1986	$5.35M	-

FAQ

What is the current annual D&A of ATO?
As of today, ATO annual D&A is $734.75M
What is 1-year change in ATO annual D&A?
ATO annual D&A is up +9.67% year-over-year
What is 3-year change in ATO annual D&A?
ATO annual D&A is up +37.17% over the past 3 years
How far is ATO annual D&A from its all-time high?
ATO annual D&A is currently at its all-time high
How does ATO annual D&A rank versus sector peers?
ATO annual D&A is higher than 62.96% of companies in Utilities sector
When is ATO next annual earnings release?
As of today, the next annual earnings release for ATO has not been scheduled

Quarterly D&A

$194.65M$8.97M+4.83%

December 31, 2025

Summary

Current Value: As of today, ATO quarterly D&A is $194.65M, up +4.83% on December 31, 2025
Historical Performance: ATO quarterly D&A is up +7.82% year-over-year, up +33.30% over the past 3 years
All-Time High Comparison: ATO quarterly D&A is currently at its all-time high
3-Year Low Comparison: ATO quarterly D&A is +33.30% above its 3-year low of $146.02M reached on an earlier date
Sector Comparison: ATO quarterly D&A is higher than 63.11% of companies in Utilities sector

Performance

ATO Performance
Metric	Date	Value	3M	1Y	3Y	5Y
	Dec 31, 25	$194.65M	+4.8%	+7.8%	+33.3%	+68.8%
	Sep 30, 25	$734.75M	–	+9.7%	+37.2%	+70.9%
	Dec 31, 25	$748.86M	+1.9%	+9.2%	+35.2%	+70.2%
Price	Mar 4, 26	$185.08	+8.3%	+23.6%	+64.2%	+108.2%
	Dec 31, 25	$0.00	0.0%	0.0%	0.0%	0.0%
	Dec 31, 25	$939.76M	+67.0%	+14.0%	-22.5%	+34.8%
	Dec 31, 25	$107.37M	+15.6%	+13.1%	+14.8%	+46.2%
Quarterly Revenue	Dec 31, 25	$1.34B	+82.0%	+14.2%	-9.5%	+46.8%

Quarterly D&A Highs

ATO Quarterly D&A Highs Comparison
Period	High	Date	Current
1Y	$194.65M	Dec 31, 25	at high
3Y	$194.65M	Dec 31, 25	at high
5Y	$194.65M	Dec 31, 25	at high
All	$194.65M	Dec 31, 25	at high

Quarterly D&A Lows

ATO Quarterly D&A Lows Comparison
Period	Low	Date	Current
1Y	$180.53M	N/A	+7.8%
3Y	$146.02M	N/A	+33.3%
5Y	$115.29M	N/A	+68.8%
All	$13.60M	Dec 31, 98	+1331.2%

Quarterly D&A History

Month	Value	Change
Dec 2025	$194.65M	+4.8%
Sep 2025	$185.68M	-0.1%
Jun 2025	$185.79M	+1.7%
Mar 2025	$182.75M	+1.2%
Dec 2024	$180.53M	+4.1%
Sep 2024	$173.45M	+4.0%
Jun 2024	$166.83M	+1.1%
Mar 2024	$165.09M	+0.3%
Dec 2023	$164.61M	+3.4%
Sep 2023	$159.26M	+5.7%
Jun 2023	$150.73M	+1.6%
Mar 2023	$148.32M	+1.6%
Dec 2022	$146.02M	+4.2%
Sep 2022	$140.19M	+4.4%
Jun 2022	$134.23M	+0.6%
Mar 2022	$133.37M	+4.3%
Dec 2021	$127.86M	+2.5%
Sep 2021	$124.71M	+4.5%
Jun 2021	$119.35M	+0.6%
Mar 2021	$118.64M	+2.9%
Dec 2020	$115.29M	+3.2%
Sep 2020	$111.75M	+4.3%
Jun 2020	$107.10M	+1.1%
Mar 2020	$105.92M	+0.8%
Dec 2019	$105.06M	+4.1%
Sep 2019	$100.92M	+3.3%
Jun 2019	$97.70M	+1.0%
Mar 2019	$96.77M	+0.7%
Dec 2018	$96.07M	+3.7%
Sep 2018	$92.66M	+2.2%
Jun 2018	$90.67M	+1.4%
Mar 2018	$89.38M	+1.1%
Dec 2017	$88.37M	+4.2%
Sep 2017	$84.80M	+6.0%
Jun 2017	$80.02M	+3.0%
Mar 2017	$77.67M	+0.7%
Dec 2016	$77.14M	+2.3%
Sep 2016	$75.44M	+1.3%
Jun 2016	$74.44M	+3.4%
Mar 2016	$71.97M	+1.0%
Dec 2015	$71.24M	+0.2%
Sep 2015	$71.09M	+3.4%
Jun 2015	$68.73M	+0.6%
Mar 2015	$68.31M	+0.7%
Dec 2014	$67.87M	-1.0%
Sep 2014	$68.56M	+6.8%
Jun 2014	$64.18M	+4.3%
Mar 2014	$61.53M	+1.4%
Dec 2013	$60.69M	+0.4%
Sep 2013	$60.42M	+3.6%
Jun 2013	$58.31M	+0.1%
Mar 2013	$58.25M	-3.9%
Dec 2012	$60.63M	-2.8%
Sep 2012	$62.38M	+1.5%
Jun 2012	$61.46M	-0.8%

Month	Value	Change
Mar 2012	$61.92M	+1.8%
Dec 2011	$60.81M	-1.0%
Sep 2011	$61.43M	+5.1%
Jun 2011	$58.43M	+2.3%
Mar 2011	$57.14M	+1.7%
Dec 2010	$56.16M	-1.0%
Sep 2010	$56.75M	+6.5%
Jun 2010	$53.29M	+0.5%
Mar 2010	$53.04M	-1.5%
Dec 2009	$53.88M	-4.6%
Sep 2009	$56.45M	+4.2%
Jun 2009	$54.18M	+1.4%
Mar 2009	$53.45M	+0.6%
Dec 2008	$53.13M	+0.6%
Sep 2008	$52.78M	+4.8%
Jun 2008	$50.36M	+3.2%
Mar 2008	$48.79M	+0.6%
Dec 2007	$48.51M	-2.6%
Sep 2007	$49.83M	+1.7%
Jun 2007	$48.97M	-4.1%
Mar 2007	$51.07M	+4.2%
Dec 2006	$49.00M	+1.9%
Sep 2006	$48.06M	+2.6%
Jun 2006	$46.86M	-1.2%
Mar 2006	$47.41M	+9.6%
Dec 2005	$43.26M	-4.4%
Sep 2005	$45.23M	+4.1%
Jun 2005	$43.45M	-4.1%
Mar 2005	$45.33M	+3.0%
Dec 2004	$44.00M	+64.4%
Sep 2004	$26.77M	+15.0%
Jun 2004	$23.27M	+0.6%
Mar 2004	$23.14M	-1.4%
Dec 2003	$23.47M	+8.0%
Sep 2003	$21.73M	-2.1%
Jun 2003	$22.19M	+3.9%
Mar 2003	$21.35M	-1.8%
Dec 2002	$21.74M	+5.5%
Sep 2002	$20.59M	+1.1%
Jun 2002	$20.36M	+1.6%
Mar 2002	$20.04M	-2.1%
Dec 2001	$20.47M	+3.1%
Sep 2001	$19.85M	+23.1%
Jun 2001	$16.13M	+1.4%
Mar 2001	$15.91M	+0.8%
Dec 2000	$15.78M	-16.0%
Sep 2000	$18.79M	+24.1%
Jun 2000	$15.14M	-8.2%
Mar 2000	$16.49M	-0.1%
Dec 1999	$16.50M	+6.9%
Sep 1999	$15.43M	+9.9%
Jun 1999	$14.04M	+1.8%
Mar 1999	$13.80M	+1.5%
Dec 1998	$13.60M	-

FAQ

What is the current quarterly D&A of ATO?
As of today, ATO quarterly D&A is $194.65M
What is ATO quarterly D&A most recent change?
ATO quarterly D&A was up +4.83% on December 31, 2025
What is 1-year change in ATO quarterly D&A?
ATO quarterly D&A is up +7.82% year-over-year
How far is ATO quarterly D&A from its all-time high?
ATO quarterly D&A is currently at its all-time high
How does ATO quarterly D&A rank versus sector peers?
ATO quarterly D&A is higher than 63.11% of companies in Utilities sector
When is ATO next earnings release?
The next earnings release for ATO is on May 6, 2026

TTM D&A

$748.86M$14.11M+1.92%

December 31, 2025

Summary

Current Value: As of today, ATO TTM D&A is $748.86M, up +1.92% on December 31, 2025
Historical Performance: ATO TTM D&A is up +9.18% year-over-year, up +35.22% over the past 3 years
All-Time High Comparison: ATO TTM D&A is currently at its all-time high
3-Year Low Comparison: ATO TTM D&A is +35.22% above its 3-year low of $553.82M reached on an earlier date
Sector Comparison: ATO TTM D&A is higher than 63.11% of companies in Utilities sector

Performance

ATO Performance
Metric	Date	Value	3M	1Y	3Y	5Y
	Dec 31, 25	$748.86M	+1.9%	+9.2%	+35.2%	+70.2%
	Sep 30, 25	$734.75M	–	+9.7%	+37.2%	+70.9%
	Dec 31, 25	$194.65M	+4.8%	+7.8%	+33.3%	+68.8%
Price	Mar 4, 26	$185.08	+8.3%	+23.6%	+64.2%	+108.2%
	Dec 31, 25	$19.57B	+100.0%	+100.0%	+100.0%	+100.0%
TTM Revenue	Dec 31, 25	$4.87B	+3.5%	+16.4%	+4.2%	+70.3%

TTM D&A Highs

ATO TTM D&A Highs Comparison
Period	High	Date	Current
1Y	$748.86M	Dec 31, 25	at high
3Y	$748.86M	Dec 31, 25	at high
5Y	$748.86M	Dec 31, 25	at high
All	$748.86M	Dec 31, 25	at high

TTM D&A Lows

ATO TTM D&A Lows Comparison
Period	Low	Date	Current
1Y	$685.90M	N/A	+9.2%
3Y	$553.82M	N/A	+35.2%
5Y	$440.05M	N/A	+70.2%
All	$13.60M	Dec 31, 98	+5406.3%

TTM D&A History

Month	Value	Change
Dec 2025	$748.86M	+1.9%
Sep 2025	$734.75M	+1.7%
Jun 2025	$722.52M	+2.7%
Mar 2025	$703.56M	+2.6%
Dec 2024	$685.90M	+2.4%
Sep 2024	$669.97M	+2.2%
Jun 2024	$655.79M	+2.5%
Mar 2024	$639.69M	+2.7%
Dec 2023	$622.92M	+3.1%
Sep 2023	$604.33M	+3.3%
Jun 2023	$585.26M	+2.9%
Mar 2023	$568.76M	+2.7%
Dec 2022	$553.82M	+3.4%
Sep 2022	$535.66M	+3.0%
Jun 2022	$520.17M	+2.9%
Mar 2022	$505.29M	+3.0%
Dec 2021	$490.55M	+2.6%
Sep 2021	$477.98M	+2.8%
Jun 2021	$465.02M	+2.7%
Mar 2021	$452.77M	+2.9%
Dec 2020	$440.05M	+2.4%
Sep 2020	$429.83M	+2.6%
Jun 2020	$419.00M	+2.3%
Mar 2020	$409.60M	+2.3%
Dec 2019	$400.45M	+2.3%
Sep 2019	$391.46M	+2.2%
Jun 2019	$383.19M	+1.9%
Mar 2019	$376.17M	+2.0%
Dec 2018	$368.77M	+2.1%
Sep 2018	$361.08M	+2.2%
Jun 2018	$353.23M	+3.1%
Mar 2018	$342.58M	+3.5%
Dec 2017	$330.86M	+3.5%
Sep 2017	$319.63M	+3.0%
Jun 2017	$310.28M	+1.8%
Mar 2017	$304.70M	+1.9%
Dec 2016	$299.00M	+2.0%
Sep 2016	$293.10M	+1.5%
Jun 2016	$288.75M	+2.0%
Mar 2016	$283.04M	+1.3%
Dec 2015	$279.38M	+1.2%
Sep 2015	$276.01M	+0.9%
Jun 2015	$273.47M	+1.7%
Mar 2015	$268.92M	+2.6%
Dec 2014	$262.13M	+2.8%
Sep 2014	$254.96M	+3.3%
Jun 2014	$246.82M	+2.4%
Mar 2014	$240.95M	+1.4%
Dec 2013	$237.67M	+0.0%
Sep 2013	$237.61M	-0.8%
Jun 2013	$239.57M	-1.3%
Mar 2013	$242.72M	-1.5%
Dec 2012	$246.39M	-0.1%
Sep 2012	$246.58M	+0.4%
Jun 2012	$245.62M	+1.2%

Month	Value	Change
Mar 2012	$242.59M	+2.0%
Dec 2011	$237.81M	+2.0%
Sep 2011	$233.16M	+2.0%
Jun 2011	$228.48M	+2.3%
Mar 2011	$223.34M	+1.9%
Dec 2010	$219.25M	+1.1%
Sep 2010	$216.96M	+0.1%
Jun 2010	$216.66M	-0.4%
Mar 2010	$217.55M	-0.2%
Dec 2009	$217.96M	+0.3%
Sep 2009	$217.21M	+1.7%
Jun 2009	$213.54M	+1.8%
Mar 2009	$209.72M	+2.3%
Dec 2008	$205.06M	+2.3%
Sep 2008	$200.44M	+1.5%
Jun 2008	$197.49M	+0.7%
Mar 2008	$196.11M	-1.1%
Dec 2007	$198.38M	-0.2%
Sep 2007	$198.86M	+0.9%
Jun 2007	$197.10M	+1.1%
Mar 2007	$194.99M	+1.9%
Dec 2006	$191.33M	+3.1%
Sep 2006	$185.60M	+1.5%
Jun 2006	$182.77M	+1.9%
Mar 2006	$179.35M	+1.2%
Dec 2005	$177.27M	-0.4%
Sep 2005	$178.01M	+11.6%
Jun 2005	$159.54M	+14.5%
Mar 2005	$139.36M	+18.9%
Dec 2004	$117.17M	+21.2%
Sep 2004	$96.65M	+5.5%
Jun 2004	$91.61M	+1.2%
Mar 2004	$90.53M	+2.0%
Dec 2003	$88.74M	+2.0%
Sep 2003	$87.00M	+1.3%
Jun 2003	$85.87M	+2.2%
Mar 2003	$84.04M	+1.6%
Dec 2002	$82.73M	+1.5%
Sep 2002	$81.47M	+0.9%
Jun 2002	$80.72M	+5.5%
Mar 2002	$76.49M	+5.7%
Dec 2001	$72.36M	+6.9%
Sep 2001	$67.66M	+1.6%
Jun 2001	$66.61M	+1.5%
Mar 2001	$65.62M	-0.9%
Dec 2000	$66.20M	-1.1%
Sep 2000	$66.92M	+5.3%
Jun 2000	$63.56M	+1.8%
Mar 2000	$62.46M	+4.5%
Dec 1999	$59.77M	+5.1%
Sep 1999	$56.87M	+37.2%
Jun 1999	$41.44M	+51.3%
Mar 1999	$27.40M	+101.5%
Dec 1998	$13.60M	-

FAQ

What is the current TTM D&A of ATO?
As of today, ATO TTM D&A is $748.86M
What is ATO TTM D&A most recent change?
ATO TTM D&A was up +1.92% on December 31, 2025
What is 1-year change in ATO TTM D&A?
ATO TTM D&A is up +9.18% year-over-year
How far is ATO TTM D&A from its all-time high?
ATO TTM D&A is currently at its all-time high
How does ATO TTM D&A rank versus sector peers?
ATO TTM D&A is higher than 63.11% of companies in Utilities sector
When is ATO next earnings release?
The next earnings release for ATO is on May 6, 2026

Data Sources & References

ATO Official Website www.atmosenergy.com
Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/731802/000073180226000013/0000731802-26-000013-index.htm
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/731802/000073180225000056/0000731802-25-000056-index.htm
ATO Profile on Yahoo Finance finance.yahoo.com/quote/ATO
ATO Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/ato