# EDGAR Filing Document

**Accession Number:** 0001968890
**File Stem:** 0001968890-23-000001
**Filing Date:** 2023-3
**Character Count:** 8017
**Document Hash:** d55d9e9852911ab1ed450667e78adc7b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001968890-23-000001.hdr.sgml**: 20230310

**ACCESSION NUMBER**: 0001968890-23-000001

**CONFORMED SUBMISSION TYPE**: 13F-HR

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230310

**DATE AS OF CHANGE**: 20230310

**EFFECTIVENESS DATE**: 20230310

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Flagstone Financial Management
- **CENTRAL INDEX KEY:** 0001968890
- **IRS NUMBER:** 814389161
- **STATE OF INCORPORATION:** NE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-23158
- **FILM NUMBER:** 23723269

**BUSINESS ADDRESS:**
- **STREET 1:** 5801 HIDCOTE DR. STE 100
- **CITY:** LINCOLN
- **STATE:** NE
- **ZIP:** 68516
- **BUSINESS PHONE:** 402-413-0440

**MAIL ADDRESS:**
- **STREET 1:** 5801 HIDCOTE DR. STE 100
- **CITY:** LINCOLN
- **STATE:** NE
- **ZIP:** 68516

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 12-31-2022

**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:** Flagstone Financial Management<br>**Address:** 5801 Hidcote Dr. Ste 100<br>Lincoln, NE 68516

**Form 13F File Number:** 028-23158

**CRD Number (if applicable):** 000285484

**SEC File Number (if applicable):** 801-108722

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 T. Johnson<br>**Title:** Chief Compliance Officer<br>**Phone:** 402-413-0440

**Signature, Place, and Date of Signing:**

/s/ Michael T. Johnson  Lincoln, NE  03-10-2023<br>[Signature]  [City, State]  [Date]

**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 are reported 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:** 42

**Form 13F Information Table Value Total:** $164193634

      (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.]

**NONE**

### FORM 13F INFORMATION TABLE

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | VOTING AUTHORITY | VOTING AUTHORITY | VOTING AUTHORITY |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | SOLE | SHARED | NONE |
| ALPHABET INC | CAP STK CL C | 02079K107 |  | 292277 | 3294 | SH |  | SOLE |  | 0 | 0 | 3294 |
| AMER STATES WTR CO | COM | 029899101 |  | 231800 | 2505 | SH |  | SOLE |  | 0 | 0 | 2505 |
| AMERICAN CENTY ETF TR | AVANTIS EMGMKT | 025072604 |  | 11575857 | 229452 | SH |  | SOLE |  | 9 | 0 | 229443 |
| AMERICAN CENTY ETF TR | US EQT ETF | 025072885 |  | 6524579 | 95936 | SH |  | SOLE |  | 41 | 0 | 95895 |
| AMERICAN CENTY ETF TR | US SML CP VALU | 025072877 |  | 8131119 | 109128 | SH |  | SOLE |  | 0 | 0 | 109128 |
| AMERICAN CENTY ETF TR | INTL SMCP VLU | 025072802 |  | 6725396 | 121507 | SH |  | SOLE |  | 0 | 0 | 121507 |
| AMERICAN CENTY ETF TR | INTL EQT ETF | 025072703 |  | 2926894 | 55027 | SH |  | SOLE |  | 25 | 0 | 55002 |
| APPLE INC | COM | 037833100 |  | 852836 | 6564 | SH |  | SOLE |  | 0 | 0 | 6564 |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 |  | 937422 | 2 | SH |  | SOLE |  | 0 | 0 | 2 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 |  | 3368555 | 10905 | SH |  | SOLE |  | 0 | 0 | 10905 |
| DIMENSIONAL ETF TRUST | CORE FIXED INCOM | 25434V872 |  | 300547 | 7239 | SH |  | SOLE |  | 0 | 0 | 7239 |
| DIMENSIONAL ETF TRUST | EMGR CRE EQT MNG | 25434V302 |  | 729096 | 33216 | SH |  | SOLE |  | 0 | 0 | 33216 |
| DIMENSIONAL ETF TRUST | INTERNATNAL VAL | 25434V807 |  | 276640 | 9100 | SH |  | SOLE |  | 0 | 0 | 9100 |
| DIMENSIONAL ETF TRUST | SHORT DURATION F | 25434V864 |  | 208290 | 4519 | SH |  | SOLE |  | 0 | 0 | 4519 |
| DIMENSIONAL ETF TRUST | US EQUITY ETF | 25434V401 |  | 36645236 | 880683 | SH |  | SOLE |  | 0 | 0 | 880683 |
| EXXON MOBIL CORP | COM | 30231G102 |  | 1155579 | 10477 | SH |  | SOLE |  | 0 | 0 | 10477 |
| ISHARES TR | NATIONAL MUN ETF | 464288414 |  | 523696 | 4963 | SH |  | SOLE |  | 0 | 0 | 4963 |
| ISHARES TR | RUS MID CAP ETF | 464287499 |  | 331989 | 4922 | SH |  | SOLE |  | 0 | 0 | 4922 |
| ISHARES TR | RUSSELL 2000 ETF | 464287655 |  | 255437 | 1465 | SH |  | SOLE |  | 0 | 0 | 1465 |
| ISHARES TR | SHRT NAT MUN ETF | 464288158 |  | 341380 | 3274 | SH |  | SOLE |  | 0 | 0 | 3274 |
| ISHARES TR | ESG AWRE 1 5 YR | 46435G243 |  | 1529482 | 64345 | SH |  | SOLE |  | 0 | 0 | 64345 |
| JPMORGAN CHASE  CO | COM | 46625H100 |  | 637247 | 4752 | SH |  | SOLE |  | 0 | 0 | 4752 |
| MARKEL CORP | COM | 570535104 |  | 334642 | 254 | SH |  | SOLE |  | 0 | 0 | 254 |
| MICROSOFT CORP | COM | 594918104 |  | 932595 | 3889 | SH |  | SOLE |  | 0 | 0 | 3889 |
| NVIDIA CORPORATION | COM | 67066G104 |  | 285542 | 1954 | SH |  | SOLE |  | 0 | 0 | 1954 |
| PEPSICO INC | COM | 713448108 |  | 217536 | 1204 | SH |  | SOLE |  | 0 | 0 | 1204 |
| ROCKWELL AUTOMATION INC | COM | 773903109 |  | 513745 | 1995 | SH |  | SOLE |  | 0 | 0 | 1995 |
| SPDR INDEX SHS FDS | DJ GLB RL ES ETF | 78463X749 |  | 515718 | 12609 | SH |  | SOLE |  | 5 | 0 | 12604 |
| SPDR INDEX SHS FDS | PORTFOLIO DEVLPD | 78463X889 |  | 13624956 | 458907 | SH |  | SOLE |  | 0 | 0 | 458907 |
| SPDR SER TR | PORTFOLIO SHORT | 78464A474 |  | 15770483 | 536776 | SH |  | SOLE |  | 0 | 0 | 536776 |
| SPDR SER TR | PORTFOLIO AGRGTE | 78464A649 |  | 314351 | 12509 | SH |  | SOLE |  | 0 | 0 | 12509 |
| SPDR SER TR | PORTFOLIO INTRMD | 78464A375 |  | 11253610 | 353554 | SH |  | SOLE |  | 0 | 0 | 353554 |
| SPDR SER TR | PORTFLI INTRMDIT | 78464A672 |  | 11703600 | 414433 | SH |  | SOLE |  | 0 | 0 | 414433 |
| UNION PAC CORP | COM | 907818108 |  | 276129 | 1334 | SH |  | SOLE |  | 0 | 0 | 1334 |
| US BANCORP DEL | COM NEW | 902973304 |  | 894204 | 20505 | SH |  | SOLE |  | 0 | 0 | 20505 |
| VANGUARD CHARLOTTE FDS | TOTAL INT BD ETF | 92203J407 |  | 10411398 | 219511 | SH |  | SOLE |  | 0 | 0 | 219511 |
| VANGUARD INDEX FDS | REAL ESTATE ETF | 922908553 |  | 4745703 | 57538 | SH |  | SOLE |  | 0 | 0 | 57538 |
| VANGUARD MALVERN FDS | STRM INFPROIDX | 922020805 |  | 5774067 | 123615 | SH |  | SOLE |  | 0 | 0 | 123615 |
| VANGUARD SCOTTSDALE FDS | INTER TERM TREAS | 92206C706 |  | 423922 | 7249 | SH |  | SOLE |  | 0 | 0 | 7249 |
| VANGUARD SCOTTSDALE FDS | SHORT TERM TREAS | 92206C102 |  | 214165 | 3704 | SH |  | SOLE |  | 0 | 0 | 3704 |
| VANGUARD SPECIALIZED FUNDS | DIV APP ETF | 921908844 |  | 1050162 | 6916 | SH |  | SOLE |  | 0 | 0 | 6916 |
| WELLS FARGO CO NEW | COM | 949746101 |  | 435752 | 10553 | SH |  | SOLE |  | 0 | 0 | 10553 |

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