The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 06-30-2025
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Bain Capital Investors LLC
Address: 200 Clarendon Street
Boston, MA  02116
Form 13F File Number: 028-11185
CRD Number (if applicable):
SEC File Number (if applicable):

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: Michael D. Ward
Title: Partner of Bain Capital Investors, LLC
Phone: 617-516-2000
Signature, Place, and Date of Signing:
/s/ Michael D. Ward Boston MA 08-14-2025
[Signature] [City, State] [Date]
Bain Capital Investors, LLC ("BCI") is the (i) manager of Bain Capital Partners XII, LLC, which is the general partner of Bain Capital Fund XII, L.P., which is the sole member of both (a) BCPE Perception GP, LLC, which is the general partner of BC Perception Holdings, LP, and (b) BCPE Nucleon Investors (GP), LLC, which is the general partner of BCPE Nucleon Investors, LP, which is the managing member of BCPE Nucleon (DE) SPV (GP), LLC, which is the general partner of BCPE Nucleon (DE) SPV, LP, (ii) general partner of Bain Capital Partners XI, L.P., which is the general partner of Bain Capital Fund XI, L.P., which is the sole member of each of (a) BCPE Eagle GP, LLC, which is the general partner of BCPE Eagle Investor, LP, (b) BCPE Derby GP, LLC, which is the general partner of BCPE Derby Investor, LP, and (c) BCPE Derby (DE) SPV (GP), LLC, which is the general partner of BCPE Derby (DE) SPV, LP, (iii) sole member of BCPE Seminole GP LLC, which is the general partner of both BCPE Seminole Holdings LP and BCPE Seminole Holdings IV, L.P., and (iv) sole member of both BCPE Seminole GP II LLC and BCPE Seminole GP III LLC, which are the general partners of BCPE Seminole Holdings II Intermediate LP and BCPE Seminole Holdings III, L.P., respectively. BCI does not direct investment decisions with respect to the securities managed by subsidiaries of Envestnet, Inc., including Envestnet Asset Management, Inc. and Envestnet Portfolio Solutions, Inc.
Report Type (Check only one.):
X 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
   13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
   13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 23
Form 13F Information Table Entry Total: 6
Form 13F Information Table Value Total: 3,136,155,179
(round to nearest dollar)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
No. Name Form 13F File No. CRD No. (if applicable) SEC File No. (if applicable) CIK
1 Bain Capital Partners XII, LLC 28-20812      
2 Bain Capital Fund XII, L.P. 28-20813      
3 BCPE Perception GP, LLC 28-20811      
4 BC Perception Holdings, LP 28-20815      
5 BCPE Nucleon Investors (GP), LLC 28-25288      
6 BCPE Nucleon Investors, LP 28-25286      
7 BCPE Nucleon (DE) SPV (GP), LLC 28-25285      
8 BCPE Nucleon (DE) SPV, LP 28-25284      
9 Bain Capital Partners XI, L.P. 28-21922      
10 Bain Capital Fund XI, L.P. 28-16158      
11 BCPE Eagle GP, LLC 28-22026      
12 BCPE Derby GP, LLC 28-25287      
13 BCPE Derby (DE) SPV (GP), LLC 28-25291      
14 BCPE Eagle Investor, LP 28-21915      
15 BCPE Derby Investor, LP 28-25289      
16 BCPE Derby (DE) SPV, LP 28-25283      
17 BCPE Seminole GP LLC 28-18474      
18 BCPE Seminole Holdings LP 28-18475      
19 BCPE Seminole Holdings IV, L.P. 28-22965      
20 BCPE Seminole GP II LLC 28-22974      
21 BCPE Seminole GP III LLC 28-22973      
22 BCPE Seminole Holdings II Intermediate LP 28-22977      
23 BCPE Seminole Holdings III, L.P. 28-22967