NORTHROP GRUMMAN CORP /DE/ Auditor
The independent registered public accounting firm that signed the audit report in each annual report on Form 10-K, newest first. PCAOB firm ID and the internal-control attestation are as tagged on the cover from fiscal 2021; earlier rows come from the signed report text.
- 2026-01-27: Fiscal year end 2025-12-31; Auditor Deloitte & Touche LLP; PCAOB firm ID 34; Location McLean, Virginia.
- 2025-01-30: Fiscal year end 2024-12-31; Auditor Deloitte & Touche LLP; PCAOB firm ID 34; Location McLean, Virginia.
- 2024-01-25: Fiscal year end 2023-12-31; Auditor Deloitte & Touche LLP; PCAOB firm ID 34; Location McLean, Virginia.
- 2023-01-26: Fiscal year end 2022-12-31; Auditor Deloitte & Touche LLP; PCAOB firm ID 34; Location McLean, Virginia.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-01-27 | 2025-12-31 | Deloitte & Touche LLP | 34 | McLean, Virginia | Yes |
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| 2025-01-30 | 2024-12-31 | Deloitte & Touche LLP | 34 | McLean, Virginia | Yes |
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| 2024-01-25 | 2023-12-31 | Deloitte & Touche LLP | 34 | McLean, Virginia | Yes |
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| 2023-01-26 | 2022-12-31 | Deloitte & Touche LLP | 34 | McLean, Virginia | Yes |
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| 2022-01-27 | 2021-12-31 | Deloitte & Touche LLP | 34 | McLean, Virginia | Yes |
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| 2021-01-28 | 2020-12-31 | Deloitte & Touche LLP | | McLean, Virginia | Yes |
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| 2020-01-30 | 2019-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2019-01-31 | 2018-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2018-01-29 | 2017-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2017-01-30 | 2016-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2016-02-01 | 2015-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2015-02-02 | 2014-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2014-02-03 | 2013-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2013-02-05 | 2012-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2012-02-08 | 2011-12-31 | Deloitte & Touche LLP | | McLean, Virginia | |
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| 2011-02-09 | 2010-12-31 | Deloitte & Touche LLP | | Los Angeles, California | |
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| 2010-02-09 | 2009-12-31 | Deloitte & Touche LLP | | Los Angeles, California | |
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| 2009-02-10 | 2008-12-31 | Deloitte & Touche LLP | | Los Angeles, California | |
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