August 28, 2011: Debut as group "Stella" with single "Rocket Girl"

2011: Stellar records "Loving U" for Spy Myung-wol OST Part 5

January 26, 2012: Lee Seul and JoA leave group

January 27, 2012: New members Minhee and Hyoeun are added to the group

 

February 8, 2012: Single "UFO" released

 

July 11, 2013: Single "Study" released

February 2014: Stellar is involved in a scandal as they change their tone to sexy. Their promotional material for upcoming mini-album Marionette is heavily criticized.

February 12, 2014: First mini-album Marionette is released with title track MV

August 21, 2014: Single "Mask" released

2015: Stellar records "My, Love You" for All Is Well OST
Group appears in documentary Human Documentary: People Are Good

March 11, 2015: Single "Fool" is released

 

July 20, 2015: Single "Vibrato" is released.
Stellar is involved in controversy again for their sexy themes.

2016: Stellar appears in variety show "Vitamin"

 

January 8, 2016: Crowdfunding on Makestar beings to help Stellar produce their next mini-album. Their goal is met within 3 days. The campaign would go on to reach 422% of their original goal.

 

January 18, 2016: Second mini-album "Sting" is released with title track MV

April 22, 2016: Stellar holds their first solo concert in Seoul

 

July 10, 2016: Stellar begins another Makestar campaign for a summer single release. The goal was met within 5 days. 

 

July 18, 2016: Single album "Cry" with title track MV is released

August 27, 2016: Stellar debuts in Japan with a showcase in Tokyo

December 3, 2016: Stellar holds their 2nd concert, "After Story"

December 24, 2016: Stellar holds a concert in Japan

March 26, 2017: Stellar holds a sold-out concert "FEELZ" in Brazil

April 24, 2017: Stellar's 'Fanspecial' Makestar successfully finishes, at 1,132.42% of the original goal

May 18, 2017: Stellar officially adds new member Soyoung to the group

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June 27, 2017: Stellar's mini album "Stellar Into the World" is released, with title track "Archangels of the Sephiroth" and MV

Stellar expresses disappointment with their company, as physical copies of the album had many issues and were delayed

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August 23, 2017: As their contracts expire, Gayoung and Jeonyul leave the group and The Entertainment Pascal

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August 25, 2017: New member Youngheun is added to Stellar

Controversy occurs when Minhee and Hyoeun express shock at Youngheun's addition, as they seemed unaware prior to TEP's statement

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August 28, 2017: Stellar holds their anniversary concert "Interstellar: Time Travel Through 6 Years"

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September 30, 2017: Soyoung and Youngheun appeared in trailers for reality show "MixNine", however, they did not appear when the show aired. 

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February 22, 2018: The members post on social media about their final fanmeeting to take place on February 25

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February 26, 2018: It is confirmed that Stellar has disbanded