Robeco Institutional Asset Management Us Inc.

Includes form instructions and options. Options shown in this text do not identify which boxes were selected.

GENERAL INSTRUCTIONS
This Disclosure Reporting Page (DRP ADV) is an 
INITIAL OR
AMENDED response used to report details for affirmative responses to Items 11.C., 11.D.,
11.E., 11.F. or 11.G. of Form ADV.
Regulatory Action
Check item(s) being responded to:
11.C(1)
11.C(2)
11.C(3)
11.C(4)
11.C(5)
11.D(1)
11.D(2)
11.D(3)
11.D(4)
11.D(5)
11.E(1)
11.E(2)
11.E(3)
11.E(4)
11.F.
11.G.
Use a separate DRP for each event or proceeding . The same event or proceeding may be reported for more than one person or entity using one DRP. File
with a completed Execution Page. 
One event may result in more than one affirmative answer to Items 11.C., 11.D., 11.E., 11.F. or 11.G. Use only one DRP to report details related to the
same event. If an event gives rise to actions by more than one regulator, provide details for each action on a separate DRP.
PART I
A.  The person(s) or entity(ies) for whom this DRP is being filed is (are):
You (the advisory firm)
You and one or more of your advisory affiliates
One or more of your advisory affiliates
If this DRP is being filed for an advisory affiliate, give the full name of the advisory affiliate below (for individuals, Last name, First name, Middle name). 
If the advisory affiliate has a CRD number, provide that number. If not, indicate "non-registered" by checking the appropriate box.
ADV DRP - ADVISORY AFFILIATE
CRD
Number:
This advisory affiliate is 
a Firm
an Individual
Registered:
Yes
No
Name:
ROBECO INSTITUTIONAL
ASSET MANAGEMENT B.V.
(For individuals, Last, First,
Middle)
This DRP should be removed from the ADV record because the advisory affiliate(s) is no longer associated with the adviser.
This DRP should be removed from the ADV record because: (1) the event or proceeding occurred more than ten years ago or (2) the adviser is
registered or applying for registration with the SEC or reporting as an exempt reporting adviser with the SEC and the event was resolved in the
adviser's or advisory affiliate's favor.
If you are registered or registering with a state securities authority , you may remove a DRP for an event you reported only in response to Item
11.D(4), and only if that event occurred more than ten years ago. If you are registered or registering with the SEC, you may remove a DRP for any
event listed in Item 11 that occurred more than ten years ago.
This DRP should be removed from the ADV record because it was filed in error, such as due to a clerical or data-entry mistake. Explain the
circumstances: 
B.
If the advisory affiliate is registered through the IARD system or CRD system, has the advisory affiliate submitted a DRP (with Form ADV, BD or U-4) to
the IARD or CRD for the event? If the answer is "Yes," no other information on this DRP must be provided.
 Yes
 No

NOTE: The completion of this form does not relieve the advisory affiliate of its obligation to update its IARD or CRD records.
PART II
1.  Regulatory Action initiated by:
SEC   
Other Federal   
State   
SRO
Foreign
(Full name of regulator, foreign financial regulatory authority, federal, state, or SRO) 
SOUTH KOREA FINANCIAL SUPERVISORY SERVICE (FSS)
2.
Principal Sanction:
Civil and Administrative Penalt(ies) /Fine(s)
Other Sanctions: 
3.
Date Initiated (MM/DD/YYYY): 
03/18/2026
 Exact
 Explanation
If not exact, provide explanation:
4.
Docket/Case Number:
CAPITAL MARKETS INVESTIGATION COORDINATION DIVISION - 648
5.
Advisory Affiliate Employing Firm when activity occurred which led to the regulatory action (if applicable):
6.
Principal Product Type:
Equity Listed (Common & Preferred Stock)
Other Product Types: 
7.
Describe the allegations related to this regulatory action (your response must fit within the space provided):
ROBECO INSTITUTIONAL ASSET MANAGEMENT US, INC. (RIAM US) IS AN SEC REGISTERED INVESTMENT ADVISER BASED IN NEW YORK. RIAM US IS
AFFILIATED WITH ROBECO INSTITUTIONAL ASSET MANAGEMENT B.V. (RIAM BV) WHICH IS NOT REGISTERED IN ANY CAPACITY WITH THE SEC AND IS
BASED IN ROTTERDAM, THE NETHERLANDS. ON JUNE 11 2024, INCORRECT POSITIONS IN RIAM BV'S CHARLES RIVER MANAGEMENT SYSTEM TRIGGERED
THE ISSUANCE OF TRADE ORDERS IN EQUITY SECURITIES RESULTING IN SHORT SALE ORDERS BEING SENT TO THE KOREA EXCHANGE FOR EXECUTION.
POST EXECUTION, RIAM BV DISCOVERED THE ORDERS SENT IN ERROR AND SELF-REPORTED THE INCIDENT TO THE SOUTH KOREAN FINANCIAL
SUPERVISORY SERVICE (FSS). IN ADDITION, A REVIEW BY RIAM BV REVEALED THAT ONLY ONE RIAM BV CLIENT WAS IMPACTED AND THE CLIENT WAS
FULLY COMPENSATED. ALSO, POST INCIDENT RIAM BV REINFORCED ITS ORDER MANAGEMENT SYSTEMS AND OVERSIGHT TO PREVENT RECURRENCE. ON
MARCH 18, 2026, RIAM BV RECEIVED A FINAL DECISION BY THE FSS TO FINE RIAM BV KRW 413.7 MILLION (EQUIVALENT TO EUR 240,000 AND
APPROXIMATELY $271,629 USD AS OF MARCH 31, 2026).
8.
Current Status?      
 Pending
 On Appeal
 Final
9.
If on appeal, regulatory action appealed to (SEC, SRO, Federal or State Court) and Date Appeal Filed:
If Final or On Appeal, complete all items below. For Pending Actions, complete Item 13 only.
10. How was matter resolved:
Settled
11. Resolution Date (MM/DD/YYYY):
03/18/2026
 Exact
 Explanation
If not exact, provide explanation:
12. Resolution Detail:
A.  Were any of the following Sanctions Ordered (check all appropriate items)?
 Monetary/Fine Amount: $ 271,629.00
 Revocation/Expulsion/Denial
 Disgorgement/Restitution
 Censure
 Cease and Desist/Injunction
 Bar
 Suspension
B.
Other Sanctions Ordered:
Sanction detail: if suspended, enjoined or barred, provide duration including start date and capacities affected (General Securities Principal,
Financial Operations Principal, etc.). If requalification by exam/retraining was a condition of the sanction, provide length of time given to
requalify/retrain, type of exam required and whether condition has been satisfied. If disposition resulted in a fine, penalty, restitution,
disgorgement or monetary compensation, provide total amount, portion levied against you or an advisory affiliate, date paid and if any portion
of penalty was waived: 
ON MARCH 18, 2026, RIAM BV, AN ADVISORY AFFILIATE OF RIAM US AGREED TO PAY A FINE OF KRW 413.7 MILLION (APPX EURO 240,000 AND

APPX $271,629 USD AS OF MARCH 31, 2026) TO THE SOUTH KOREA FINANCIAL SUPERVISORY SERVICE (FSS), PURSUANT TO A SETTLED
RESOLUTION, IN CONNECTION WITH THE FSS'S FINDINGS THAT RIAM BV HAD NOT COMPLIED WITH SOUTH KOREAN SECURITIES REGULATIONS
RELATED TO SHORT SELLING POSITIONS IN SOUTH KOREAN SECURITIES.
13. Provide a brief summary of details related to the action status and (or) disposition and include relevant terms, conditions and dates (your response
must fit within the space provided).
ON MARCH 18, 2026, RIAM BV AGREED TO ACCEPT THE FINDINGS WITHOUT CONTESTING AND PAY A FINE OF KRW 413.7 MILLION (APPX EURO
240,000/APPX $ 271,629 USD AS OF 3/31/2026).