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8-K filings in March 2024, explained

39 material Form 8-K filings that 35 companies we cover made with the SEC in March 2024, each read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). All of them were written later, when past filings were added: a selection, not every 8-K of the month (see the note below).

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DUOLDuolingo, Inc. Mar 5, 6:13 PM ET

Duolingo amends Pittsburgh office lease, expanding space to 148,266 square feet

Neutral product/contract Written later 1.01 2.03

On March 4, 2024, Duolingo signed the First Amendment to its Pittsburgh office lease with 5704 Penn Office, LLC. The amendment adds 110,008 square feet starting August 1, 2025, for a total of 148,266 square feet, and extends the expiration date to April 30, 2036. The filing also discloses the added rent obligation, which means a longer fixed rent commitment for shareholders to weigh against the expanded space.

First Amendment signed March 4, 2024 adds 110,008 square feet, bringing the total to 148,266 square feet beginning August 1, 2025.
Initial base rent on the additional space is approximately $394,000 per month, rising about 2.0% per year, with roughly 9% increases in the third and fifth years tied to added parking access.
Lease expiration extends to April 30, 2036.
Landlord will provide an improvement allowance of up to approximately $6.6 million for design, permitting and construction.

Read the filing on SEC.gov ↗

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.

Briefs marked “Written later” were written in November 2026 for filings that were by then more than three weeks old, so months before mid-October 2026 hold a selection: every material 8-K of the past year for the 100 largest companies we cover and the last 15 important 8-Ks of every other one. Briefs the number check holds back are not shown or counted. Also: the last 45 days, briefs by company, A–Z and the live SEC filings wire.