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

FORM 13F COVER PAGE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
Report for the Calendar Year or Quarter Ended:
12-31-2025
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:
HARVARD MANAGEMENT CO INC
Address:
600 ATLANTIC AVENUE
BOSTON, MA 02210-2203
Form 13F File Number:
028-03879

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:
Kathryn I. Murtagh
Title:
Managing Director - Chief Compliance Officer
Phone:
617-523-4400


Signature, Place, and Date of Signing:

/s/ Kathryn I. Murtagh
                         [Signature]
Boston, MASSACHUSETTS
                 [City, State]
02-13-2026
                           [Date]
                          

Report Type (Check only one.):

☒ 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:
0
Form 13F Information table Entry Total:
19
Form 13F Information table Value Total:
2079274080
          (thousands)

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.]

  
NONE


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

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
10X GENOMICS INCCL A COM88025U1092,772,700170,000SHSOLE170,000 0 0
ALPHABET INCCAP STK CL A02079K305252,872,700807,900SHSOLE807,900 0 0
AMAZON COM INCCOM023135106156,921,823679,845SHSOLE679,845 0 0
BOOKING HOLDINGS INCCOM09857L108180,249,69733,658SHSOLE33,658 0 0
BROADCOM INCCOM11135F101111,363,213321,766SHSOLE321,766 0 0
FIGMA INCCLASS A COM STK3168411051,885,46650,454SHSOLE50,454 0 0
FLUTTER ENTMT PLCSHSG3643J10824,833,034115,481SHSOLE115,481 0 0
ISHARES BITCOIN TRUST ETFSHS BEN INT46438F101265,806,8365,353,612SHSOLE5,353,612 0 0
ISHARES ETHEREUM TRSHS46438R10586,824,2873,870,900SHSOLE3,870,900 0 0
KLARNA GROUP PLCSHSG5279N10513,274,402459,163SHSOLE459,163 0 0
META PLATFORMS INCCL A30303M102119,981,259181,765SHSOLE181,765 0 0
MICROSOFT CORPCOM594918104236,818,074489,678SHSOLE489,678 0 0
NVIDIA CORPORATIONCOM67066G10476,519,272410,291SHSOLE410,291 0 0
PURECYCLE TECHNOLOGIES INC*W EXP 03/17/20274623V111549,999714,285SHSOLE714,285 0 0
SPDR GOLD TRGOLD SHS78463V107248,268,400626,450SHSOLE626,450 0 0
TAIWAN SEMICONDUCTOR MFG LTDSPONSORED ADS87403910093,232,236306,796SHSOLE306,796 0 0
UNION PAC CORPCOM907818108141,390,418611,233SHSOLE611,233 0 0
ZILLOW GROUP INCCL A98954M10120,545,554301,122SHSOLE301,122 0 0
ZILLOW GROUP INCCL C CAP STK98954M20045,164,710662,045SHSOLE662,045 0 0