OSI Systems, Inc. (OSIS)
Nasdaq: OSIS · Semiconductors & Related Devices · Hawthorne, CA · filing with the SEC since 1997
Grade5.6
◀ Past 6.0● Present 6.1▶ Future 4.6
Who owns OSI Systems, Inc.
As filed with the SECHolders of 5% or more
5
Blackrock, Inc. holds 15.2% of Common Stock, as its SCHEDULE 13G/A filed Oct 27, 2026 says.
Directors and officers
14
report now, of 25 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 14.2% in Jul 18, 2025
Fmr LLC
SCHEDULE 13G/A · filed Aug 6, 2026 · COMMON STOCK · 12.6% in May 6, 2026
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
JANUS HENDERSON GROUP Ltd.
SCHEDULE 13G · filed Aug 13, 2026 · Common Stock · 4.7% in May 15, 2026
Vanguard Capital Management
SCHEDULE 13G · filed Jul 31, 2026 · Common Stock
Mawer Investment Management Ltd.
SCHEDULE 13G/A · filed Feb 11, 2026 · Common Stock · reported falling below 5%, from 5.09% in Nov 12, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What OSIS reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Privately Held Provider of Critical Military, Space and Surveillance Solutions
A company bought · acquisition · Sep 2024 · owns, named in the 10-K filed Aug 21, 2026
Privately Held Provider of Airport Screening Services
A company bought · acquisition · owns, named in the 10-K filed Aug 21, 2026
86 subsidiaries in 32 countries, from the list filed with the 10-K filed Aug 21, 2026.
Insider tradesForm 4
4sales
0purchases
3sales on a scheduled plan
2people selling
$16.5Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 9, 2025 to Nov 9, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 9, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 25 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Chopra Deepak | EXECUTIVE CHAIRMAN | 3 | $16.4M | 3 | 0 | $0 |
| Morben Paul Keith | PRES., OPTOELECTRONICS DIV | 1 | $100,000 | 0 | 0 | $0 |