UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 3)*
Principal Financial Group, Inc.
 (Name of Issuer)
Common Stock
 (Title of Class of Securities)
74251V102
 (CUSIP Number)
December 31, 2019
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP: 74251V102                                                Page 1 of 4	

1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Capital Research Global Investors **
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a)
(b)

3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
5 SOLE VOTING POWER
14,274,750

             6   SHARED VOTING POWER
 NUMBER OF
   SHARES         NONE
BENEFICIALL
 Y OWNED BY
             7   SOLE DISPOSITIVE POWER
    EACH
 REPORTING        14,274,750
   PERSON
   WITH:
             8   SHARED DISPOSITIVE POWER

                  NONE	

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
14,274,750 Beneficial ownership disclaimed pursuant to Rule 13d-4
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
 (SEE INSTRUCTIONS)
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
5.1%
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IA
** A division of Capital Research and Management Company (CRMC)

CUSIP: 74251V102                                                Page 2 of 4	

SECURITIES AND EXCHANGE COMMISSION
 Washington, DC 20549
Schedule 13G
Under the Securities Exchange Act of 1934
Amendment No. 3
Item 1(a) Name of Issuer:
Principal Financial Group, Inc.
Item 1(b) Address of Issuer's Principal Executive Offices:
 711 High Street
Des Moines, Iowa 50392
Item 2(a) Name of Person(s) Filing:
Capital Research Global Investors
Item 2(b) Address of Principal Business Office or, if none,
 Residence:
333 South Hope Street
Los Angeles, CA 90071
Item 2(c) Citizenship: N/A
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
74251V102
Item 3 If this statement is filed pursuant to sections 240.13d-1(b)
 or 240.13d-2(b) or (c), check whether the person filing is a:
(e) [X] An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E).
Item 4 Ownership
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned:
(b) Percent of class:
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
(ii) Shared power to vote or to direct the vote:
(iii) Sole power to dispose or to direct the disposition of:
(iv) Shared power to dispose or to direct the disposition of:
See page 2
Capital Research Global Investors divisions of CRMC is deemed to be the beneficial owner of 14,274,750 shares or 5.1% of the 277,671,934 shares believed to be outstanding.
Item 5 Ownership of Five Percent or Less of a Class. If this
 statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial

CUSIP: 74251V102                                                Page 3 of 4	

owner of more than five percent of the class of securities, check the following: [ ]
Item 6 Ownership of More than Five Percent on Behalf of Another
Person: N/A
Item 7 Identification and Classification of the Subsidiary Which
 Acquired the Security Being Reported on By the Parent Holding Company or Control Person: N/A
Item 8 Identification and Classification of Members of the Group:
 N/A
Item 9 Notice of Dissolution of Group: N/A
Item 10 Certification
By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.
Signature
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date:          February 13, 2020

Signature:     /s/ Donald H. Rolfe
Name/Title:    Donald H. Rolfe - Senior Vice President
               and Senior Counsel, Fund Business
               Management Group
               Capital Research and Management Company	

CUSIP: 74251V102                                                Page 4 of 4