X, formerly Twitter, is closing its San Francisco headquarters after 13 years in the city, The San Francisco Standard reported.

The decision marks the end of an era for San Francisco’s Mid-Market neighborhood, which had been revitalized by tech companies like X.

In an internal email, CEO Linda Yaccarino announced the office closure, stating that employees based in San Francisco will be relocated to the South Bay over the next few weeks. Engineering staff will move to an office in Palo Alto shared with xAI, another Elon Musk-owned company. Other employees will be assigned to existing offices in Santana Row, San Jose.

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Yaccarino said the company is “actively working on plans, including transportation options,” but did not specify if shuttle services or commuter benefits will be provided. X did not respond to requests for additional comment.

Since Elon Musk’s acquisition of the company in late 2022, X has implemented significant changes, including a mandate for local employees to return to the office full-time and major layoffs. Sources indicated that much of the San Francisco headquarters space at 1355 Market St. is now vacant. Last month, X began marketing the space for sublease.

Musk had previously announced plans to move the company to Austin, Texas, driven by his opposition to a California transgender protection law, though Yaccarino’s email did not address that relocation.

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The Mid-Market area had been bolstered by a 2011 city tax break aimed at attracting tech firms. Twitter, among other companies, benefited from this incentive, which contributed to a business surge in the area. However, with the expiration of the tax break and the rise of remote work, the neighborhood’s tech boom has faded.

X’s departure is seen as another blow to the once-vibrant district.

Read more at The San Francisco Standard.