Company: TENB
Filing Date: 2025-05-06
Form Type: 10-Q
Source: 0001660280-25-000072
Chunk: 14

Company: Tenable Holdings, Inc.
Filing Date: 2025-05-06
Form: 10-Q
Item: Part I, Item 1
Chunk 14
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16,63015,300Research and development12,96711,161General and administrative(1)22,99110,276Total stock-based compensation expense$55,903$39,719_______________(1)    Stock-based compensation in the three months ended March 31, 2025 includes $14.6 million of expense related to the accelerated vesting of equity awards for our late CEO.A summary of the unrecognized stock-based compensation expense related to unvested stock at March 31, 2025 is presented below:Unrecognized Stock-Based Compensation Expense (in thousands)Estimated Weighted Average Period (in years)Restricted stock units ("RSUs")$390,014 3.0Performance stock units ("PSUs")9,5023.6Restricted stock5,7161.02018 Employee Stock Purchase Plan ("2018 ESPP")14,4121.0Restricted Stock, RSUs and PSUsA summary of our restricted stock, RSU and PSU activity is presented below:Restricted StockRSUsPSUs(in thousands, except for per share data)Number of SharesWeightedAverageGrant Date Fair ValueNumber of SharesWeightedAverageGrant Date Fair ValueNumber of SharesWeightedAverageGrant Date Fair ValueUnvested balance at December 31, 2024187$45.67 7,209$45.01 300$45.78 Granted— — 4,502 38.52 200 38.37 Performance adjustment(1)— — — — (6)47.20 Vested(31)45.67 (1,599)45.91 (163)46.12 Forfeited— — (187)44.99 — — Unvested balance at March 31, 202515645.679,92541.93 33141.10 _______________(1)    Represents adjustments due to the achievement of predefined financial performance targets.In January 2025, under the evergreen provision in our 2018 Equity Incentive Plan we reserved an additional 6.0 million shares of our common stock. At March 31, 2025, there were 27.5 million shares available for grant under the plan.

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Stock Options A summary of our stock option activity is presented below:(in thousands, except for exercise prices and years)Numberof SharesWeightedAverageExercise PriceWeighted-Average Remaining Contractual Term