Stephen Douglas Kelley

CIK: 0001443674

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)13 (44.8%)

Position reduction

Option Exercises (M)5 (17.2%)

Derivative conversions

Awards (A)6 (20.7%)

Compensation grants

Other (G, F, J, C, D, …)5 (17.2%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

ONTO

ONTO INNOVATION INC.

Director

AEIS

ADVANCED ENERGY INDUSTRIES INC

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (29 total)

ONTO
ONTO INNOVATION INC.
May 20, 2026
Award(A)
Direct
761 shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
3.3K shares at avg. $311.88$1.0M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
3.7K shares at avg. $313.80$1.2M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
5.7K shares at avg. $314.82$1.8M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
13.3K shares at avg. $319.05$4.2M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
7.2K shares at avg. $317.94$2.3M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
2.3K shares at avg. $317.21$732K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
2.3K shares at avg. $315.88$730K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
856 shares at avg. $321.13$275K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
7.5K shares at avg. $319.90$2.4M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
543 shares at avg. $305.48$166K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
876 shares at avg. $306.87$269K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
1.2K shares at avg. $309.77$379K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 10, 2026
Sale(S)
Direct
1.1K shares at avg. $306.96$341K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2026
Award(A)
Performance Units
Direct
18.3K shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2026
Exercise(M)
Direct
10.4K shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2026
Exercise(M)
Direct
9.1K shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2026
Tax Payment(F)
Direct
13.4K shares at avg. $335.57$4.5M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2026
Award(A)
Restricted Stock Units
Direct
11.6K shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Feb 18, 2026
Exercise(M)
Direct
53.7K shares at avg. $314.12$16.9M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Feb 18, 2026
Tax Payment(F)
Direct
23.5K shares at avg. $314.12$7.4M
ONTO
ONTO INNOVATION INC.
May 21, 2025
Award(A)
Direct
2.1K shares-
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 16, 2025
Tax Payment(F)
Direct
3.9K shares at avg. $106.19$411K
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2025
Tax Payment(F)
Direct
9.4K shares at avg. $115.17$1.1M
AEIS
ADVANCED ENERGY INDUSTRIES INC
Mar 1, 2025
Exercise(M)
Direct
10.5K shares-

		Type	Shares	Price		Ownership
May 20, 2026	ONTO ONTO INNOVATION INC.	Award(A)	761	-	$0	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	3,330	$311.88	$1,038,560	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	3,718	$313.80	$1,166,708	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	5,678	$314.82	$1,787,548	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	13,278	$319.05	$4,236,346	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	7,229	$317.94	$2,298,388	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	2,309	$317.21	$732,438	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	2,312	$315.88	$730,315	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	856	$321.13	$274,887	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	7,535	$319.90	$2,410,447	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	543	$305.48	$165,876	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	876	$306.87	$268,818	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	1,224	$309.77	$379,158	Direct
Mar 10, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Sale(S)	1,112	$306.96	$341,340	Direct
Mar 1, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Award(A) Performance Units	18,260	-	-	Direct
Mar 1, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Exercise(M)	10,449	-	$0	Direct
Mar 1, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Exercise(M)	9,130	-	$0	Direct
Mar 1, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Tax Payment(F)	13,355	$335.57	$4,481,537	Direct
Mar 1, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Award(A) Restricted Stock Units	11,620	-	-	Direct
Feb 18, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Exercise(M)	53,704	$314.12	$16,869,500	Direct
Feb 18, 2026	AEIS ADVANCED ENERGY INDUSTRIES INC	Tax Payment(F)	23,504	$314.12	$7,383,076	Direct
May 21, 2025	ONTO ONTO INNOVATION INC.	Award(A)	2,114	-	-	Direct
Mar 16, 2025	AEIS ADVANCED ENERGY INDUSTRIES INC	Tax Payment(F)	3,873	$106.19	$411,274	Direct
Mar 1, 2025	AEIS ADVANCED ENERGY INDUSTRIES INC	Tax Payment(F)	9,361	$115.17	$1,078,106	Direct
Mar 1, 2025	AEIS ADVANCED ENERGY INDUSTRIES INC	Exercise(M)	10,450	-	-	Direct

1-25 of 29 transactions

About Kelley Stephen Douglas

Kelley Stephen Douglas (SEC CIK 0001443674) files insider reports with the SEC as Director of ONTO INNOVATION INC. (ONTO) and President and CEO of ADVANCED ENERGY INDUSTRIES INC (AEIS).

Signal8 holds 8 ownership filings by Kelley Stephen Douglas, all Form 4s, filed between Feb 21, 2025 and May 22, 2026. Those filings report 29 transactions, from Feb 20, 2025 to May 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Kelley Stephen Douglas's filings is in DENVER, CO.

Recent filings by Kelley Stephen Douglas

May 20, 2026: Grant or award of ONTO shares (Form 4, code A).
Mar 10, 2026: Open-market sales of AEIS shares (13 lines, Form 4, code S).
Mar 1, 2026: Grant or award of AEIS derivative securities (Form 4, code A).
Mar 1, 2026: Option exercises of AEIS shares (2 lines, Form 4, code M).
Mar 1, 2026: Tax withholding of AEIS shares (Form 4, code F).

Other insiders filing for ONTO INNOVATION INC. (ONTO)

MILLER DAVID BRIAN, Director
ROBERTS BRIAN K, Chief Financial Officer
Chen Shirley, Senior Vice President of Custo
Lynch Susan D, Director
Su May, Director
SEAMS CHRISTOPHER A, Director

How to read Form 4 transaction codes