Microsurgical Transplantation Research

EIN 94-6123393 • 501(c)3 • San Mateo, CA

Profile

Microsurgical research programs teach fellow doctors the latest techniques in microsurgery, which involves the reattachment of nerve cells, arteries, and other soft tissues. In addition to the 1,100 patients benefitting by having reconstructive microsurgery, 4 fellow doctors recieve training in the art of microsurgery. Microsurgical Transplantation Research Foundation also provides medical research including the publications of medical research papers and presentations at national and international symposiums on specific medical procedures related to microsurgery for the benefit of doctors, institutions, and ultimately patients worldwide. In addition, approximately 20% of the patients treated are done at no cost as no patient is refused treatment.

101 N El Camino Real Suite ASan Mateo, CA 94401

n/A

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

No value available

Liabilities-to-assets requires both liabilities and assets on the latest valid filing.

Source year 2025

No value available

Liabilities-to-revenue requires both liabilities and revenue on the latest valid filing.

Source year 2025

-5492%

Higher net margin than 1% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2025

-38%

Faster asset growth than 23% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

-90%

Faster revenue growth than 7% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Balance Sheet

Liabilities / AssetsScore unavailable

Assets

Down

$268,269

Down $165,247 (-38%) from 2024

Liabilities

No earlier filing loaded for comparison.

Net Assets

Down

$268,269

Down $165,247 (-38%) from 2024

Operations

Liabilities / RevenueScore unavailable Net Margin1st percentile

Revenue

Down

$3,009

Down $27,645 (-90%) from 2024

Expenses

$168,256

Up $102,992 (+158%) from 2024

Net Income

Down

-$165,247

Down $130,637 (-377%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth23rd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

Highlighted filing

2025

Assets$268,269

Liabilities-

Net Assets$268,269

Open 2025 Filing

Operations Trend

Revenue Growth7th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

Highlighted filing

2025

Revenue$3,009

Expenses$168,256

Net Income-$165,247

Open 2025 Filing

Filings

Most recent year

2025 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing

Assets: $268,269
Liabilities: -
Net assets: $268,269
Revenue: $3,009
Expenses: $168,256
Net income: -$165,247

	Balance Sheet			Operations
Year	Assets	Liabilities	Net Assets	Revenue	Expenses	Net Income
2025Detailed filing. Detailed filing data is available for this year.	$2.68		$2.68	$0.03	$1.68	$1.65
2024Detailed filing. Detailed filing data is available for this year.	$4.34		$4.34	$0.31	$0.65	$0.35
2023Detailed filing. Detailed filing data is available for this year.	$4.68		$4.68	$0.07	$0.17	$0.11
2022Detailed filing. Detailed filing data is available for this year.	$4.79		$4.79	$0.27	$0.25	$0.02
2021Detailed filing. Detailed filing data is available for this year.	$4.77		$4.77	$0.19	$0.24	$0.04
2020Detailed filing. Detailed filing data is available for this year.	$4.81		$4.81	$0.47	$0.30	$0.17
2019Detailed filing. Detailed filing data is available for this year.	$4.64		$4.64	$0.04	$0.24	$0.20
2018Detailed filing. Detailed filing data is available for this year.	$4.83		$4.83	$0.48	$0.30	$0.18
2017Detailed filing. Detailed filing data is available for this year.	$4.66		$4.66	$0.16	$0.32	$0.16
2016Detailed filing. Detailed filing data is available for this year.	$4.82		$4.82	$0.57	$0.49	$0.09
2015Detailed filing. Detailed filing data is available for this year.	$4.73		$4.73	$0.29	$0.72	$0.43
2014Detailed filing. Detailed filing data is available for this year.	$5.16	$0.00	$5.16	$1.71	$1.02	$0.69
2013Summary only. Only limited summary data is available for this year.	$4.81	$0.00		$1.00	$1.14	$0.15
2012Summary only. Only limited summary data is available for this year.	$4.95	$0.00	$4.95	$2.12	$1.59	$0.53
2011Summary only. Only limited summary data is available for this year.	$4.42	$0.00		$0.55	$1.66	$1.11

Latest Filing Detail

Jump To

Filing Snapshot

Filing Period: Jan 1, 2025 to Dec 31, 2025
Signed: Mar 2, 2026
Return Version: 2025v4.0
Gross Receipts: $3,009

Mission and Program Overview

Mission

Program Services

Description	Grants	Expenses
Microsurgical research programs teach fellow doctors the latest techniques in microsurgery, which involves the reattachment of nerve cells, arteries, and other soft tissues. In addition to the 1,100 patients benefitting by having reconstructive microsurgery, 4 fellow doctors recieve training in the art of microsurgery. Microsurgical Transplantation Research Foundation also provides medical research including the publications of medical research papers and presentations at national and international symposiums on specific medical procedures related to microsurgery for the benefit of doctors, institutions and ultimately patients worldwide. In addition, approximately 20% of the patients treated are done at no cost-no patient can be refused.	-	$167,968

Compensation and Service Providers

Top Officer Pay81st percentile

Employees

Name	Title	Full / Part Time	Base	Other	Total
Gregory M Buncke	President	-	$0	-	-
Rudolf Buntic	Vice President	-	$0	-	-

Filing and Contact Details

Filer

Filer Name: Microsurgical Transplantation Research
EIN: 94-6123393
Phone: 6503428989
Address: 101 N El Camino Real Suite A, San Mateo, CA 94401

Signing Officer

Name: Gregory M Buncke
Title: President
Signed: 2026-03-02
Discuss with paid preparer: Yes

Preparer

Firm: DS Tax Group
Address: 1900 S Norfolk St Suite 350, San Mateo, CA 94403
Preparer: Kaiying Tian CPA
Phone: 6505142829

Supplemental Narrative

Additional Explanations

Other Expenses.1002

“Office Expenses $350”

Other Expenses.1007

“Conferences, Conventions, and Meetings $16972”

Other Expenses.1009

“Depreciation $288”

Other Expenses.1

“Payroll service fee $2463”

Other Expenses.2

“Medical license & fees $1200”

Other Expenses.3

“BANK CHARGE $233”

Other Expenses.4

“Business license & permit $25”

Other Assets.1003

“Machinery and Equipment - Beginning $2782 Machinery and Equipment - Ending $2494”

Other Assets.1009

“Notes and Loans Receivable - Beginning $5695 Notes and Loans Receivable - Ending $5695”

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