ONTO INNOVATION INC. (ONTO) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Low Risk
Limited dilution potential
Last updated: May 05, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 1.64% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
50M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

ONTO currently has 49.7M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 1.64% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 05, 2026

10-Q filing | 49.7M shares outstanding

50M 0
Nov 21, 2025

S-3 filing: This prospectus relates to the offering and resale by the selling stockholder of up to 641,771 shares of common stock of Onto Innovation Inc.

49M 640K
Nov 06, 2025

10-Q filing | 49.0M shares outstanding

49M 0
Oct 10, 2025

8-K filing: Onto Innovation Inc. amended its Equity Purchase Agreement with Semilab International Zrt. to acquire Semilab USA, adjusting the purchase price to $432,310,000 in cash and 641,771 shares of Onto Innovation Inc.'s common stock.

49M 0
May 08, 2025

10-Q filing | 49.2M shares outstanding

49M 0
Feb 25, 2025

10-K filing | 49.3M shares outstanding

49M 0
Oct 31, 2024

10-Q filing | 49.4M shares outstanding

49M 0
Aug 08, 2024

10-Q filing | 49.3M shares outstanding

49M 0
May 09, 2024

10-Q filing | 49.2M shares outstanding

49M 0
Feb 26, 2024

10-K filing | 49.3M shares outstanding

49M 0
Nov 13, 2023

10-Q filing | 49.0M shares outstanding

49M 0
Aug 10, 2023

10-Q filing | 49.0M shares outstanding

49M 0
May 04, 2023

10-Q filing | 48.8M shares outstanding

49M 0
Feb 24, 2023

10-K filing | 49.4M shares outstanding

49M 0
Nov 10, 2022

10-Q filing | 49.7M shares outstanding

50M 0
Aug 09, 2022

10-Q filing | 49.6M shares outstanding

50M 0
May 03, 2022

10-Q filing | 49.4M shares outstanding

49M 0
Feb 25, 2022

10-K filing | 49.2M shares outstanding

49M 0
Nov 04, 2021

10-Q filing | 49.4M shares outstanding

49M 0
Aug 05, 2021

10-Q filing | 49.2M shares outstanding

49M 0
Apr 29, 2021

10-Q filing | 49.0M shares outstanding

49M 0
Feb 19, 2021

10-K filing | 49.1M shares outstanding

49M 0
Nov 02, 2020

10-Q filing | 48.9M shares outstanding

49M 0
Aug 04, 2020

10-Q filing | 48.7M shares outstanding

49M 0
May 05, 2020

10-Q filing | 50.1M shares outstanding

50M 0
Feb 25, 2020

10-K filing | 50.3M shares outstanding

50M 0
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