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ON24 ON24 Announces Third Quarter 2021 Financial Results . ARR increased 20 % year - over - year to $ 167.2 million • Third quarter subscription and other platform revenue increased 27 % year - over - year to $ 43.6 million • Third quarter total revenue increased 16 % year - over - year to $ 49.4 million • Number of customers contributing at least $ 100K in ARR increased 32 % year - over - year Exhibit 99.1 SAN FRANCISCO -- ( BUSINESS WIRE ) -- ON24 ( NYSE : ONTF ) , a leading cloud - based digital experience platform provider , today announced financial results for its third quarter ended September 30 , 2021 . " We delivered a solid third quarter and strengthened our core enterprise customer base . We made steady progress and remain confident in the underlying strength of our business and the large market opportunity that lies ahead for us , although , as expected , we continued to face some headwinds with respect to first time renewals , " said Sharat Sharan , co - founder and CEO of ON24 . " I'm proud of the exciting platform innovations that our team is bringing to market for customers which we believe will drive our next phase of durable growth . " Third Quarter 2021 Financial Highlights • • • • • • ARR : Ending Annualized Recurring Revenue of $ 167.2 million as of September 30 , 2021 , an increase of 20 % year - over - year . Revenue : Total revenue was $ 49.4 million , an increase of 16 % year - over - year . Subscription and Other Platform Revenue , was $ 43.6 million , an increase of 27 % year - over - year . GAAP Operating Loss was $ 9.3 million , compared to GAAP operating income of $ 6.8 million in the third quarter of 2020 . Non - GAAP Operating Loss was $ 1.4 million , compared to non - GAAP operating income of $ 7.5 million in the third quarter of 2020 . GAAP Net Loss attributable to common stockholders was $ 9.4 million , or $ ( 0.20 ) per diluted share , compared to net income attributable to common stockholders of $ 5.1 million , or $ 0.12 per diluted share in the third quarter of 2020 . Non - GAAP Net Loss was $ 1.6 million , or $ ( 0.03 ) per diluted share , compared to a non - GAAP net income of $ 7.2 million , or $ 0.42 per diluted share in the third quarter of 2020 . Cash Flow : Net cash used in operating activities was $ 0.9 million , compared to $ 11.5 million provided by operating activities in the third quarter of 2020 . 1