# National Institute of Standards and Technology chair entity: /record/nist.md predicate: chair page: /record/nist/chair as_of: 2026-11-13 cite: AsOf. "National Institute of Standards and Technology chair: Laurie E. Locascio", as of 2022-04-19 (until 2024-12-28). Claim clm_E2FCE1FA46B2, https://asof.is/claim/clm_E2FCE1FA46B2, accessed 2026-11-13. Source: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and. As of November 13, 2026, the AsOf record names no chair for National Institute of Standards and Technology: Laurie E. Locascio held the role from April 19, 2022 until December 28, 2024, from 2 primary sources (nist.gov and content.govdelivery.com) and one further source (commerce.gov), and the record holds no successor yet. 5 claims on National Institute of Standards and Technology's chair, 0 open and 5 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted. ## Last chair Nobody holds the role on the record on 2026-11-13; this claim is closed. - [National Institute of Standards and Technology](/record/nist.md) | chair | Laurie E. Locascio | valid 2022-04-19 to 2024-12-28 | conf 0.95 | superseded | [clm_E2FCE1FA46B2](/claim/clm_E2FCE1FA46B2.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.commerce.gov/about/leadership/laurie-e-locascio, https://content.govdelivery.com/accounts/USNIST/bulletins/3cb2d2f, https://www.nist.gov/people/laurie-e-locascio, https://www.nist.gov/news-events/news/2022/04/laurie-locascio-confirmed-17th-nist-director, https://www.wikidata.org/wiki/Q176691 ## Every dated value One claim per line, oldest first. Superseded claims stay visible. - [National Institute of Standards and Technology](/record/nist.md) | chair | Arati Prabhakar | valid 1993-01-01 to 1997-01-01 | conf 0.95 | superseded | superseded_by [clm_6373F0B79C0C](/claim/clm_6373F0B79C0C.md) | [clm_C832CF624A78](/claim/clm_C832CF624A78.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.whitehouse.gov/briefing-room/statements-releases/2022/06/21/president-biden-to-nominate-dr-arati-prabhakar-to-lead-office-of-science-and-technology-policy/, https://www.wikidata.org/wiki/Q176691 - [National Institute of Standards and Technology](/record/nist.md) | chair | Patrick D. Gallagher | valid 2008-09-01 to 2014-06-01 | conf 0.95 | superseded | superseded_by [clm_2E7CF59A09E9](/claim/clm_2E7CF59A09E9.md) | [clm_6373F0B79C0C](/claim/clm_6373F0B79C0C.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.wikidata.org/wiki/Q176691 - [National Institute of Standards and Technology](/record/nist.md) | chair | Walter Copan | valid 2017-10-01 to 2021-01-01 | conf 0.95 | superseded | superseded_by [clm_F916A41DAFFB](/claim/clm_F916A41DAFFB.md) | [clm_2E7CF59A09E9](/claim/clm_2E7CF59A09E9.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.wikidata.org/wiki/Q176691 - [National Institute of Standards and Technology](/record/nist.md) | chair | James Olthoff | valid 2021-01-01 to 2022-04-19 | conf 0.95 | superseded | superseded_by [clm_E2FCE1FA46B2](/claim/clm_E2FCE1FA46B2.md) | [clm_F916A41DAFFB](/claim/clm_F916A41DAFFB.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.wikidata.org/wiki/Q176691 - [National Institute of Standards and Technology](/record/nist.md) | chair | Laurie E. Locascio | valid 2022-04-19 to 2024-12-28 | conf 0.95 | superseded | [clm_E2FCE1FA46B2](/claim/clm_E2FCE1FA46B2.md) sources: https://www.nist.gov/director/pao/directors-national-bureau-standards-1901-1988-and-national-institute-standards-and, https://www.commerce.gov/about/leadership/laurie-e-locascio, https://content.govdelivery.com/accounts/USNIST/bulletins/3cb2d2f, https://www.nist.gov/people/laurie-e-locascio, https://www.nist.gov/news-events/news/2022/04/laurie-locascio-confirmed-17th-nist-director, https://www.wikidata.org/wiki/Q176691 ## What replaced what - Arati Prabhakar (1993-01-01 to 1997-01-01, [clm_C832CF624A78](/claim/clm_C832CF624A78.md)) was replaced by Patrick D. Gallagher from 2008-09-01 ([clm_6373F0B79C0C](/claim/clm_6373F0B79C0C.md)) - Patrick D. Gallagher (2008-09-01 to 2014-06-01, [clm_6373F0B79C0C](/claim/clm_6373F0B79C0C.md)) was replaced by Walter Copan from 2017-10-01 ([clm_2E7CF59A09E9](/claim/clm_2E7CF59A09E9.md)) - Walter Copan (2017-10-01 to 2021-01-01, [clm_2E7CF59A09E9](/claim/clm_2E7CF59A09E9.md)) was replaced by James Olthoff from 2021-01-01 ([clm_F916A41DAFFB](/claim/clm_F916A41DAFFB.md)) - James Olthoff (2021-01-01 to 2022-04-19, [clm_F916A41DAFFB](/claim/clm_F916A41DAFFB.md)) was replaced by Laurie E. Locascio from 2022-04-19 ([clm_E2FCE1FA46B2](/claim/clm_E2FCE1FA46B2.md)) ## Questions this record answers ### Who is National Institute of Standards and Technology's chair? The record names none as of November 13, 2026. Laurie E. Locascio held the role from April 19, 2022 until December 28, 2024, from 2 primary sources (nist.gov and content.govdelivery.com) and one further source (commerce.gov); no successor is on the record yet. ### When did Laurie E. Locascio leave as National Institute of Standards and Technology's chair? On December 28, 2024, after holding the role since April 19, 2022, from 2 primary sources (nist.gov and content.govdelivery.com) and one further source (commerce.gov). ### When did National Institute of Standards and Technology's chair last change? The latest value on the record is Laurie E. Locascio, dated April 19, 2022; before it the record holds James Olthoff, dated January 1, 2021 and closed on April 19, 2022. ### What was National Institute of Standards and Technology's chair before Laurie E. Locascio? James Olthoff, valid from January 1, 2021 to April 19, 2022 (status superseded), from a primary source (nist.gov). ## Read on - This page: /record/nist/chair (markdown: /record/nist/chair.md) - Entity twin: /record/nist.md ยท timeline: /timelines/nist.md - Every company's chair: /facts/chair.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.