ONTO Onto Innovation (ONTO) Insider Trading, Ownership & Congress Trades
Industrials · Measuring & controlling devices, nec · CIK 0000704532
Form 144 · 2
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
374
13F, latest reported quarter
What the filings say about ONTO
Insiders, 180 days
-$902.3K net sold
2 sellers · 100% of sales under a 10b5-1 plan
Congress, 1 year
No trades
Last one: sale, 2025-05-12
Planned sales (Form 144), 90 days
$902.3K
2 notices
Onto Innovation insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, ONTO INNOVATION INC. insiders sold a net $902.3K of stock across 59 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- 4 earlier Form 4 trades (code P or S) here by this insider (4 sales), the last on Feb 13, 2024.
- The trade is 18.7% of the 10,692 shares held after it.
- No other insider sold within 30 days.
- 374 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director MILLER DAVID BRIAN sold about $600.0K of ONTO under a 10b5-1 plan on Sep 29, 2026, the largest insider sale at the company since 2025; 374 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 37.3% of the 2,684 shares held after it.
- No other insider sold within 30 days.
- 374 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lynch Susan D sold about $302.3K of ONTO under a 10b5-1 plan on Aug 21, 2026, the largest insider sale at the company since 2025; 374 funds added in the latest 13F quarter.Context
- 5 earlier Form 4 trades (code P or S) here by this insider (5 sales), the last on Jan 15, 2025.
- The trade is 1.5% of the 15,472 shares held after it.
- 1 other insider sold within 30 days.
- 374 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, Customer Success Vedula Srinivas sold about $40.4K of ONTO on Feb 13, 2025; 1 other insider sold within 30 days and 374 funds added in the latest 13F quarter.Context
- 16 earlier Form 4 trades (code P or S) here by this insider (16 sales), the last on Jan 16, 2025.
- The trade is 23.3% of the 150,492 shares held after it.
- 1 other insider sold within 30 days.
- 374 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: CEO Plisinski Michael P sold about $7.7M of ONTO on Jan 21, 2025, the largest insider sale at the company on our record; 1 other insider sold within 30 days and 374 funds added in the latest 13F quarter.Context
- 14 earlier Form 4 trades (code P or S) here by this insider (14 sales), the last on Jan 14, 2025.
- The trade is 16.1% of the 185,592 shares held after it.
- 1 other insider sold within 30 days.
- 374 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: CEO Plisinski Michael P sold about $6.3M of ONTO on Jan 16, 2025, the largest insider sale at the company on our record; 1 other insider sold within 30 days and 374 funds added in the latest 13F quarter.59 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$902.3K over 180 days
-$902.3K over 90 days
more than 54% of Industrials
Congress
no House purchase disclosed in the last 12 months
Funds
374 funds bought in last quarter
more than 81% of Industrials
Revenue
+1.8% year over year
below 64% of Industrials
Margin
13.6% net margin
more than 82% of Industrials
Buybacks
$205.0M repurchased, FY to 2026-06-30
more than 72% of Industrials
Short interest
6.1% of the float short (float per yahoo 2026-10-26) · 4.0 days to cover · settled 2026-09-30
more than 78% of Industrials
What changed in the last 30 days
Oct 1Director MILLER DAVID BRIAN sold $600.0K under a 10b5-1 plan (Sep 29)
Why it matters
A 10b5-1 plan schedules trades months ahead, so this says little about what the insider thinks today.
Sep 29Director DAVID B MILLER filed to sell $600.0K by Sep 29 (Form 144)
Why it matters
A Form 144 is a notice of intent to sell; the sale may not happen, and it says nothing about the price.
Watch ONTO
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+54.3%12M
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns ONTO: institutional holders (13F)
13F holdings, latest reported quarter
5,505,181 sh
$2.1B
2,727,910 sh
$1.0B
2,247,737 sh
$850.7M
1,554,825 sh
$588.1M
1,433,715 sh
$542.7M
Congress trades in ONTO
STOCK Act disclosures, US House only, filed up to 45 days after the trade
Sold 2025-05-12 · disclosed 28 days later
$1,001 - $15,000
Sold 2025-05-09 · disclosed 31 days later
$1,001 - $15,000
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
ONTO planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
DAVID B MILLER
Filed 2026-09-29
$600.0K
SUSAN D LYNCH
Filed 2026-08-21
$302.3K
ONTO mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Paradigm Micro-Cap Fund
$15.1M position · as of 2026-06-30
8.2%
Tuttle Capital Concentrated Memory Stack ETF
$1.6M position · as of 2026-07-31
5.9%
TRIBUTARY SMALL/MID CAP FUND
$1.3M position · as of 2026-06-30
4.2%
Tanaka Growth Fund
$1.4M position · as of 2026-05-31
3.4%
Geneva SMID Cap Growth Fund
$1.5M position · as of 2026-05-31
3.4%
Buffalo Mid Cap Growth Fund
$3.8M position · as of 2026-06-30
3.3%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$7.8M
$6.5M
$2.8M
+232%
+168%
2024
$7.0M
$10.1M
$1.4M
+250%
+87%
2023
$5.6M
$21.2M
$1.3M
+221%
+55%
2022
$5.3M
$2.1M
$1.1M
+43%
-7%
2021
$5.1M
$14.0M
$1.1M
+113%
+43%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $902.3K sold by insiders over 180 days, 374 funds added last quarter, $902.3K in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
ONTO financials
Revenue growth
+1.8%
XBRL, annual
Net margin
13.6%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$1.1B
four quarters, 2025-06-29 to 2026-06-30
Revenue, TTM ONTO
| FY Jan 2026 | $1.0B |
| FY Dec 2025 | $1.0B |
| FY Dec 2024 | $987.3M |
| FY Dec 2024 | $987.3M |
| FY Dec 2023 | $815.9M |
| Jun 2026 | $343.1M |
| Mar 2026 | $291.9M |
| Jan 2026 | $266.9M |
| Sep 2025 | $218.2M |
| Jun 2025 | $253.6M |
| Mar 2025 | $266.6M |
| Dec 2024 | $263.9M |
| Sep 2024 | $252.2M |
At each fiscal year end
Single quarter
Net margin, TTM
+11.8%
net income over revenue, 2025-06-29 to 2026-06-30
Net margin, TTM ONTO
| FY Jan 2026 | +13.6% |
| FY Dec 2025 | +17.5% |
| FY Dec 2024 | +20.4% |
| FY Dec 2024 | +20.4% |
| FY Dec 2023 | +14.9% |
| Jun 2026 | +17.5% |
| Mar 2026 | +11.6% |
| Jan 2026 | +3.9% |
| Sep 2025 | +12.9% |
| Jun 2025 | +13.4% |
| Mar 2025 | +24.0% |
| Dec 2024 | +18.5% |
| Sep 2024 | +21.0% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$252.5M
operating cash flow minus capex, 2025-06-29 to 2026-06-30
Free cash flow, TTM ONTO
| FY Jan 2026 | $299.8M |
| FY Dec 2025 | $261.3M |
| FY Dec 2024 | $213.8M |
| FY Dec 2024 | $213.8M |
| FY Dec 2023 | $149.4M |
| Jun 2026 | $57.9M |
| Mar 2026 | $22.7M |
| Jan 2026 | $89.9M |
| Sep 2025 | $82.0M |
| Jun 2025 | $44.2M |
| Mar 2025 | $83.7M |
| Dec 2024 | $51.4M |
| Sep 2024 | $59.2M |
At each fiscal year end
Single quarter
Debt to equity
n/a
no debt line filed
Debt to equity ONTO
| FY Jan 2026 | n/a |
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jan 2026 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
n/a
no debt line filed
Cash flow to debt ONTO
| FY Jan 2026 | n/a |
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jan 2026 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+6.8%
TTM net income over average of 2025-06-28 and 2026-06-30
Return on equity ONTO
| FY Jan 2026 | +6.8% |
| FY Dec 2025 | +9.0% |
| FY Dec 2024 | +11.0% |
| FY Dec 2024 | +11.0% |
| FY Dec 2023 | +7.3% |
| Jun 2026 | +6.8% |
| Mar 2026 | +5.3% |
| Jan 2026 | +6.8% |
| Sep 2025 | +9.0% |
| Jun 2025 | +10.5% |
| Mar 2025 | +11.8% |
| Dec 2024 | +11.0% |
| Sep 2024 | +10.2% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+4.5%
TTM net income over average of 2025-06-28 and 2026-06-30
Return on assets ONTO
| FY Jan 2026 | +6.1% |
| FY Dec 2025 | +8.2% |
| FY Dec 2024 | +10.0% |
| FY Dec 2024 | +10.0% |
| FY Dec 2023 | +6.5% |
| Jun 2026 | +4.5% |
| Mar 2026 | +4.7% |
| Jan 2026 | +6.1% |
| Sep 2025 | +8.2% |
| Jun 2025 | +9.6% |
| Mar 2025 | +10.8% |
| Dec 2024 | +10.0% |
| Sep 2024 | +9.3% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
no debt line filed
Return on invested capital ONTO
| FY Jan 2026 | n/a |
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jan 2026 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+5.0%
operating income (EBIT proxy) over average of 2025-06-28 and 2026-06-30 minus current liabilities
Return on capital employed ONTO
| FY Jan 2026 | +6.5% |
| FY Dec 2025 | +8.2% |
| FY Dec 2024 | +10.1% |
| FY Dec 2024 | +10.1% |
| FY Dec 2023 | +6.8% |
| Jun 2026 | +5.0% |
| Mar 2026 | +5.0% |
| Jan 2026 | +6.5% |
| Sep 2025 | +8.2% |
| Jun 2025 | +9.9% |
| Mar 2025 | +11.1% |
| Dec 2024 | +10.1% |
| Sep 2024 | +9.5% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
76.52x
close 2026-10-26 over four quarters of diluted EPS, 2025-06-29 to 2026-06-30
P/E, trailing ONTO
| FY Jan 2026 | 59.88x |
| FY Dec 2025 | 44.59x |
| FY Dec 2024 | 41.05x |
| FY Dec 2024 | 42.03x |
| FY Dec 2023 | 61.90x |
| Jun 2026 | 142.27x |
| Mar 2026 | 95.83x |
| Jan 2026 | 59.88x |
| Sep 2025 | 36.04x |
| Jun 2025 | 24.48x |
| Mar 2025 | 27.62x |
| Dec 2024 | 42.03x |
| Sep 2024 | 58.21x |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
n/a
no debt line filed
Enterprise value ONTO
| FY Jan 2026 | n/a |
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jan 2026 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+2.5%
TTM free cash flow over market value at close 2026-10-26
FCF yield ONTO
| FY Jan 2026 | +3.7% |
| FY Dec 2025 | +3.4% |
| FY Dec 2024 | +2.6% |
| FY Dec 2024 | +2.5% |
| FY Dec 2023 | +2.0% |
| Jun 2026 | +1.3% |
| Mar 2026 | +2.3% |
| Jan 2026 | +3.7% |
| Sep 2025 | +4.2% |
| Jun 2025 | +4.9% |
| Mar 2025 | +4.1% |
| Dec 2024 | +2.5% |
| Sep 2024 | +2.1% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
n/a
trailing EPS growth -34%, PEG needs growth
PEG, trailing ONTO
| FY Jan 2026 | n/a |
| FY Dec 2025 | n/a |
| FY Dec 2024 | 0.64x |
| FY Dec 2024 | 0.65x |
| FY Dec 2023 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jan 2026 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | 1.21x |
| Mar 2025 | 0.49x |
| Dec 2024 | 0.65x |
| Sep 2024 | 3.64x |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2026-01 | 2025-12 | 2024-12 | 2024-12 | |
|---|---|---|---|---|
| Revenue | $1.0B | n/a | n/a | $987.3M |
| Gross profit | $499.8M | n/a | n/a | $515.3M |
| Operating income | $132.9M | n/a | n/a | $187.1M |
| Net income | $136.8M | $136.8K | $201.7K | $201.7M |
| EPS (diluted) | 2.78 | n/a | n/a | 4.06 |
| Operating cash flow | $328.3M | n/a | n/a | $245.7M |
| Cash | $346.1M | n/a | n/a | $212.9M |
| Buybacks | $75.0M | n/a | n/a | $25.1M |
SEC XBRL, fiscal years, as known on 2026-10-28
ONTO Stock Sonar score 5/7 axes
Find similar shapesCompareONTO ranks highest on risk and compliance (59th percentile) and institutional and government (50th), and lowest on insider conviction (1st), among Industrials peers.
5 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
ONTO filings, in plain words
Are Onto Innovation insiders buying or selling ONTO?
In the 180 days to 2026-10-28, Onto Innovation insiders were net sellers, a net $902.3K across purchases and sales reported on Form 4, by 2 sellers.
Have members of Congress traded ONTO?
Yes, but not in the year to 2026-10-28; the latest on record is a sale by Rob Bresnahan dated 2025-05-12.
Are there planned insider sales of ONTO?
Yes. 2 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $902.3K of stock; the latest, by DAVID B MILLER, was filed 2026-09-29.
Read the full summary
In the 180 days to 2026-10-28, Onto Innovation insiders were net sellers of ONTO, a net $902.3K across purchases and sales reported on Form 4 by 2 sellers. Members of Congress have disclosed trades in ONTO, none in the last year; the latest on record is a sale by Rob Bresnahan dated 2025-05-12. Insiders filed 2 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $902.3K of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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