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March 2012: Internet entrepreneur Zhang Yiming founds ByteDance in Beijing.

August 2012: ByteDance launches its first product, Toutiao, an AI-powered news aggregator.

July 2014: Alex Zhu launches Musical.ly, an app that enables users to create short-form lipsync music videos; Musical.ly is headquartered in Shanghai with an office in Santa Monica.

July 2015: Musical.ly hits #1 in Apple app store.

September 2016: ByteDance launches Douyin, an app with similar functionality as Musical.ly; within a year, the Chinese app achieves 100 million users and 1 billion views per day.

September 2017: ByteDance brings Douyin outside of China’s Great Firewall under the name of TikTok; the app does well in numerous Asian markets.

November 2017: ByteDance acquires Musical.ly for $1 billion; the company starts operating Musical.ly in the US, Douyin in China and TikTok in other markets.

August 2018: ByteDance merges Musical.ly with TikTok and migrates all user profiles to TikTok; Alex Zhu becomes TikTok senior vice president, saying, “Combining Musical.ly and TikTok is a natural fit given the shared mission of both experiences – to create a community where everyone can be a creator.”

October 2018: ByteDance achieves a record $75 billion valuation, making it the world’s biggest privately backed startup.

February 2019: Lil Nas X releases “Old Town Road” on TikTok, catalyzing a viral sensation that ultimately reaches #1 on Billboard’s charts.

February 2019: TikTok is fined $5.7 million for child data privacy violations.

September 2019:Washington Post reports that TikTok may be censoring protests in Hong Kong.

September 2019: Leaked documents show TikTok instructs its moderators to censor videos that mention various subjects deemed offensive by the Chinese government and Communist Party, The Guardian reports.

October 2019: U.S. Senator Marco Rubio calls on the U.S. government to investigate the national security implications of ByteDance’s acquisition of Musical.ly, citing concerns over the Chinese government and Communist Party’s use of TikTok to censor content and silence open discussion.

October 2019: U.S. Senators Chuck Schumer and Tom Cotton ask U.S. Acting Director of National Intelligence to assess the national security risks from TikTok and other Chinese-owned apps, and request a congressional briefing on the findings.

October 2019: Alex Zhu begins reporting directly to ByteDance head Zhang Yiming; he had previously reported to the head of Douyin.

November 2019: The U.S. government launches an investigation into ByteDance’s acquisition of Musical.ly on the grounds that ByteDance did not seek clearance when it acquired Musical.ly.

TikTok reportedly has 26.5 million monthly active users in the U.S. at this time.

December 2019: The U.S. Defense Department’s Defense Information Systems Agency issues a recommendation that military personnel delete TikTok from all smartphones.

Q4 2019: TikTok becomes the most downloaded app in the world and second in the U.S.

January 2020: Several U.S. military branches ban TikTok on government-issued smartphones.

March 2020: U.S. officials reach out to TikTok to discuss political disinformation.

April 2020: TikTok surpasses 2 billion downloads and sets the record for quarterly downloads.

May 2020: Various child privacy groups file a complaint with the U.S. Federal Trade Commission that TikTok is violating the Children’s Online Privacy Protection Act (COPPA) and flouting terms agreed to following its February 2019 settlement.

A TikTok spokesperson says the company “takes the issue of safety seriously for all our users, and we continue to further strengthen our safeguards and introduce new measures to protect young people on the app.”

May 2020: ByteDance hires former Disney executive Kevin Mayer as chief operating officer and TikTok chief executive officer.

June 2020: Teens organize on TikTok to fool Trump administration into anticipating high attendance for the President’s Tulsa, Oklahoma campaign rally.

June 2020: India bans 59 Chinese apps including TikTok, citing national security and data privacy concerns; the move comes amid ongoing skirmishes between the two countries on the China-India border.

July 2020: Australia Prime Minister Scott Morrison launches an investigation into TikTok surrounding data concerns.

July 2020: U.S. Secretary of State Mike Pompeo confirms the U.S. is looking into banning TikTok over concerns the app is sharing data with China; the next day, President Trump says he is considering a ban, framing it as a potential retaliation tactic against China for its handling of the coronavirus pandemic.

Aug. 2, 2020: Microsoft issues a blog post citing a conversation between chief executive Satya Nadella and President Trump around the company’s potential acquisition of TikTok.

Aug. 4, 2020: Australia Prime Minister Scott Morrisson says there is not sufficient evidence to suggest a TikTok ban is necessary.

Aug. 6, 2020: President Trump issues an executive order banning American companies from transacting with ByteDance or its subsidiaries, namely TikTok; the U.S. Secretary of Commerce is to identify specific prohibited “transactions” 45 days after the order is issued.

Aug. 14, 2020: Trump issues another executive order demanding ByteDance “divest all interests and rights” in its assets and property that enable TikTok’s U.S. operations, and data collected via TikTok in the U.S., within 90 days. The order says the U.S. investigation into ByteDance’s acquisition of Musical.ly presented “credible evidence” that ByteDance “might take action that threatens to impair the national security of the United States.”

Aug. 17, 2020: Oracle enters the discussion as a reported TikTok suitor.

Aug. 18, 2020: President Trump says he would support Oracle buying TikTok. Oracle’s cofounder and CTO Larry Ellison had previously said he supports Trump and had fundraised for him in February 2020.

Aug. 24, 2020: TikTok announces it is suing the Trump administration over the ban for failure to protect due process. Separately, a U.S.-based TikTok employee also sues the administration, stating, “I am a patriot”

Aug. 26, 2020:Kevin Mayer steps down from ByteDance and TikTok, citing a diminished role in a letter to colleagues. Rumors swirl that he was left out of ByteDance’s negotiations with potential acquirers

Aug. 27, 2020: Walmart issues a statement that it is interested in partnering with Microsoft to acquire TikTok.

Aug. 28, 2020: L.A.-based Triller, a TikTok upstart competitor, is reported to have issued a bid for TikTok along with investment firm Centricus.

Aug. 29, 2020:The Chinese government issues new export rules that complicate the exportation of TikTok’s underlying technology – namely its “For You” algorithm – to any foreign buyer.

Aug. 31, 2020:CNBC reports TikTok has chosen a buyer, with an expected sale price of $20 billion – $30 billion.

Sept. 3, 2020: With uncertainty over whether a buyer will be able to acquire TikTok’s algorithm, and debate mounting over how that affects the value of the company, numerous outlets negotiations are likely to slow as the Chinese government increases its involvement.

Sept. 13, 2020: Microsoft says in a blog post that “ByteDance let us know today they would not be selling TikTok’s US operations to Microsoft.” The company says it would have made “significant changes” to ensure security, privacy, online safety and combatting disinformation.

Sept. 14, 2020: Oracle confirms that it has been selected by ByteDance to become a “trusted technology provider” with TikTok. The company says the proposal was submitted by ByteDance to the Treasury Department over the weekend. Treasury Secretary Steven Mnuchin says on CNBC that the proposal includes making TikTok-global a U.S. headquartered company with 20,000 new jobs.

Mnuchin adds that the Committee on Foreign Investment in the United States is reviewing the proposal this week for national security implications, and will make a recommendation to the president, who will then review the proposal.

Sept. 19, 2020: President Trump tells reporters he approved the deal in concept between Oracle and TikTok’s parent company ByteDance, in which Oracle and Walmart would partner with the app in the U.S. The U.S. government postpones a planned ban on TikTok for one week.

Sept. 27, 2020: A federal judge in Washington temporarily blocks President Trump’s order banning TikTok, granting the social media firm a reprieve just hours before it was to be removed from mobile app stores. The judge says Trump’s order was “largely a unilateral decision with very little opportunity for plaintiffs to be heard,” according to the Washington Post.

Oct. 30, 2020: TikTok averts a U.S. ban again after a federal judge in Pennsylvania temporarily blocks restrictions set to take place on Nov. 12—the Trump administration’s deadline for ByteDance to close a deal in the U.S.

Nov. 7, 2020: Democrat Joe Biden defeats President Trump in the presidential election, the Associated Press and other media outlets confirm. A few days later, an advisor to President-elect Biden says it is “too early to say” Biden’s thoughts on TikTok.

Nov. 11, 2020: TikTok asks a judge to extend the deadline for its sale by 30 days. The company says it hasn’t heard an update from the administration in weeks.

Nov. 12, 2020: The U.S. Commerce Department says it won’t enforce the sale deadline imposed by Trump’s order “pending further legal developments.” The department cites the Pennsylvania ruling from October that found the TikTok crackdown exceeded the government’s power.

Nov. 13, 2020: The U.S. government extends its deadline by 15 days, giving TikTok until Nov. 27 to strike a deal that allays the government’s national security concerns.

Nov. 26, 2020: ByteDance gets another week to sell off TikTok’s U.S. business. A spokesperson for the Treasury Department tells CNBC that the government granted the extension until Dec. 4 “to allow time to review a revised submission” that it recently received.

Dec. 4, 2020: The latest deadline passes without an approved deal to sell TikTok. The Treasury Department says it won’t extend the deadline again, but there are “no plans to enforce anything,” a source tells The Washington Post.

Dec. 14, 2020: The Federal Trade Commission orders TikTok—along with Snap, YouTube, Twitter and other social media and streaming sites—to turn over information about how they collect and use information about users.

Feb. 10, 2021: Newly-inaugurated President Joe Biden slams the brakes on forcing a TikTok sale. In court papers, Biden administration lawyers file a motion to postpone the cases related to a potential ban of the popular social media app.

June 9, 2021: President Biden revokes Trump’s executive order that sought to ban TikTok and replaces it with one that calls for a broader review of foreign-controlled apps that may pose national security risks.

June 25, 2021: CNBC reports TikTok is tightly controlled by Chinese parent company ByteDance. Insiders tell the news outlet that ByteDance has access to TikTok’s American user data and is closely involved in the Culver City company’s decision-making.

July 20, 2021: Pakistan bans TikTok for the fourth time, citing “inappropriate content.” The country lifts the latest ban a few months later.

Sept 27, 2021: TikTok announces that it has surpassed 1 billion monthly active users as the app continues to rapidly rise in popularity.

Oct. 26, 2021: During a public hearing, U.S. lawmakers press Michael Beckerman, TikTok’s head of public policy for the Americas, on whether TikTok’s Chinese ownership could expose consumer data to Beijing. Beckerman says “access controls for our data is done by our U.S. teams,” adding that the data that TikTok collects is “not of a national security importance,” according to the New York Times.

Dec. 17 2021: A Wall Street Journal investigation shows that TikTok’s recommendation algorithm is flooding teens’ video feeds with eating disorder content.

December 2021: TikTok overtakes Google as the most-visited website on the internet.

Feb. 8, 2022: Facing criticism over hosting harmful content, TikTok announces new rules aimed at preventing viral hoaxes, shielding the LGBTQ community from harassment and removing videos promoting unhealthy eating.

February 2022: As Russia invades Ukraine, TikTok is awash in raw footage from the battlefield and false and misleading clips. The war raises fresh concerns about TikTok’s handling of misinformation on its platform.

March 2, 2022: A bipartisan group of state attorneys general launch an investigation into TikTok, examining whether the social media giant is harming children and young adults through the content on its platform.

March 11, 2022:Reuters reports that TikTok is close to a deal to store all of the video-sharing app’s U.S. user data with American software giant Oracle. The partnership is aimed at resolving the U.S. government’s national security concerns.

March 15, 2022: California lawmakers unveil a first-of-its-kind bill to let parents sue social media platforms like TikTok for allegedly addicting children to their apps.

March 31, 2022: Attorneys general from 44 U.S. states and territories urge TikTok and Santa Monica-based Snap to strengthen parental controls on their platforms, telling the social media giants that they must do more to protect kids online.

April 3, 2022: “The Unofficial Bridgerton Musical” wins a Grammy for Best Musical Theater Album. It’s the first Grammy-winning album to originate on TikTok, solidifying the app’s growing influence over the music industry.

April 15, 2022: The Department of Homeland Security and the Department of Justice launch probes into TikTok’s moderation of content depicting child sexual abuse, according to the Financial Times.

April 2022: TikTok is the most-downloaded app in the world during the first quarter of 2022, according to a study from digital analytics firm Sensor Tower.

May 12, 2022: The mother of a 10-year-old girl who died after allegedly trying a dangerous “Blackout Challenge” sues TikTok. The case is one of several to claim the app’s algorithm showed kids and teens videos of people choking themselves until they pass out.

June 17, 2022: BuzzFeed News publishes a bombshell report that TikTok’s data on U.S. users was repeatedly accessed in China by employees of parent company ByteDance. The report raises fresh privacy and security concerns about the Chinese-owned social media app.

The same day, TikTok announces that it migrated all of its U.S. user traffic to servers operated by American software giant Oracle, an effort to assuage concerns that American data could fall into the hands of the Chinese government.

June 28, 2022: In the wake of the BuzzFeed report, Federal Communications Commissioner Brendan Carr urges Apple and Google to remove TikTok from its app stores. Nine Republican U.S. senators send a letter to TikTok with questions about the company’s handling of American data.

June 30, 2022: TikTok responds to Republican lawmakers by detailing its plans on keeping U.S. data out of the hands of Chinese parent company ByteDance. The company’s letter confirms that ByteDance employees in China can access TikTok data, but only when “subject to a series of robust cybersecurity controls” and approvals overseen by its U.S.-based security team.

July 5, 2022: Leaders of the U.S. Senate Intelligence Committee ask the Federal Trade Commission to investigate whether TikTok deceived the public about whether people in China could access American user data.