Banks/FDIC #90235

Regulatory profile

MAIN STREET BANK

Marlborough, MA · FDIC certificate #90235 · RSSD 818401

History available34 quarters2017-12-31 to 2026-03-31

Legal statusActive

Primary regulatorFDIC

CharterSI

Peer cohortassets 1b 10b

Locations6

Current parentUnmatched RSSD entity

Performance workbook

Trend, change and peer context in one table

Open the interactive workbook to compare reported quarterly history with national, asset-band and state peers.

Peer interpretation

Strengths and opportunities

$1B–$10B asset cohort · 902 institutions

opportunityReturn on assets11thfavorable percentile · n=902

opportunityReturn on equity11thfavorable percentile · n=894

opportunityNet interest margin16thfavorable percentile · n=902

Deterministic peer comparison, not a regulatory rating or diagnosis. “Opportunity” means lower favorable percentile within this asset cohort.

Reported performance

Current filing

Total assets$1.7B+3.31% QoQ

Total deposits$1.4B+3.64% QoQ

Net loans$1.2B-2.03% QoQ

Return on assets0.63%Current filing

Return on equity5.73%Current filing

Net interest margin3.01%Current filing

Equity to assetsUnavailableDetailed Call Report

Common equity tier 1UnavailableDetailed Call Report

Noncurrent loansUnavailableDetailed Call Report

Liquid assetsUnavailableDetailed Call Report

Brokered depositsUnavailableDetailed Call Report

Loans to depositsUnavailableDetailed Call Report

Available as you continuePortfolio composition and exposure

Available as you continuePortfolio ratio trends

Available as you continueDeposit driver bridge

Available as you continueCall Report schedule explorer

Available as you continueBranch and geographic intelligence

Available as you continueWorkforce and branch productivity

Ten-year database

Quarterly observations

Available as you continueTRACE historical research workbench

Quarter	Assets	Deposits	Net loans	ROA	ROE	NIM
2026-06-30	$1.7B	$1.4B	$1.2B	0.63%	5.73%	3.01%
2026-03-31	$1.6B	$1.3B	$1.3B	0.53%	4.86%	3.01%
2025-12-31	$1.7B	$1.3B	$1.3B	0.63%	6.38%	2.91%
2025-09-30	$1.7B	$1.3B	$1.3B	0.70%	7.16%	2.83%
2025-06-30	$1.7B	$1.4B	$1.3B	0.66%	6.94%	2.76%
2025-03-31	$1.6B	$1.4B	$1.3B	0.71%	7.41%	2.78%
2024-12-31	$1.6B	$1.3B	$1.3B	0.49%	5.47%	2.63%
2024-09-30	$1.6B	$1.3B	$1.3B	0.43%	4.79%	2.65%
2024-06-30	$1.6B	$1.4B	$1.3B	0.33%	3.82%	2.65%
2024-03-31	$1.7B	$1.4B	$1.3B	0.16%	1.84%	2.61%
2023-12-31	$1.7B	$1.4B	$1.4B	0.39%	4.42%	2.83%
2023-09-30	$1.7B	$1.4B	$1.3B	0.40%	4.48%	2.86%
2023-06-30	$1.6B	$1.3B	$1.2B	0.41%	4.44%	2.95%
2023-03-31	$1.5B	$1.3B	$1.1B	0.50%	5.36%	3.10%
2022-12-31	$1.5B	$1.3B	$1.1B	0.73%	7.27%	3.24%
2022-09-30	$1.4B	$1.2B	$1.1B	0.70%	6.91%	3.23%
2022-06-30	$1.4B	$1.2B	$1.0B	0.58%	5.56%	3.11%
2022-03-31	$1.4B	$1.2B	$1.0B	0.62%	5.82%	3.00%
2021-12-31	$1.4B	$1.2B	$1.0B	0.66%	6.15%	3.18%
2021-09-30	$1.3B	$1.1B	$0.9B	0.71%	6.65%	3.25%
2021-06-30	$1.3B	$1.1B	$0.9B	0.77%	7.12%	3.24%
2021-03-31	$1.2B	$1.0B	$0.9B	0.91%	8.35%	3.33%
2020-12-31	$1.2B	$1.0B	$0.9B	0.61%	5.31%	3.28%
2020-09-30	$1.2B	$1.0B	$0.9B	0.45%	3.90%	3.32%
2020-06-30	$1.2B	$0.9B	$0.9B	0.37%	3.14%	3.38%
2020-03-31	$1.1B	$0.8B	$0.8B	-0.14%	-1.14%	3.48%
2019-12-31	$1.0B	$0.8B	$0.8B	0.51%	4.29%	3.49%
2019-09-30	$1.0B	$0.8B	$0.8B	0.57%	4.82%	3.47%
2019-06-30	$1.0B	$0.9B	$0.8B	0.55%	4.68%	3.41%
2019-03-31	$1.0B	$0.9B	$0.8B	0.88%	7.56%	3.45%
2018-12-31	$1.0B	$0.9B	$0.8B	0.63%	5.43%	3.43%
2018-09-30	$1.0B	$0.9B	$0.8B	0.67%	5.82%	3.40%
2018-06-30	$1.0B	$0.8B	$0.8B	0.69%	5.91%	3.34%
2017-12-31	$1.0B	$0.8B	$0.7B	0.63%	5.58%	3.51%

Ownership, transformations and revisions

Entity history

NIC relationships are time-bounded. Reviewed filing revisions remain distinct from mergers.

Parent relationships

Unmatched RSSD entityRSSD 3469363 · 2007-06-05 to current

Transformations

2017-04-01RSSD 317100 → 818401 · code 1

Reviewed revisions

No reviewed revisions published.

Latest registered batch · retrieved 8/27/2026, 10:51:00 AM · SHA-256 56519b9e6ae2ada5757ec111f52c6451d5e31d6d47a52fdcf0bf38acf129fcaa · source ↗

Put it in context

Compare and investigate

Use consistent definitions, then verify material findings against the official filing.

Compare →Download Board tearsheet

Quarter

Assets

Deposits

Net loans

ROA

ROE

NIM

2026-06-30

$1.7B

$1.4B

$1.2B

0.63%

5.73%

3.01%

2026-03-31

$1.6B

$1.3B

0.53%

4.86%

3.01%

2025-12-31

$1.7B

$1.3B

0.63%

6.38%

2.91%

2025-09-30

$1.7B

$1.3B

0.70%

7.16%

2.83%

2025-06-30

$1.7B

$1.4B

$1.3B

0.66%

6.94%

2.76%

2025-03-31

$1.6B

$1.4B

$1.3B

0.71%

7.41%

2.78%

2024-12-31

$1.6B

$1.3B

0.49%

5.47%

2.63%

2024-09-30

$1.6B

$1.3B

0.43%

4.79%

2.65%

2024-06-30

$1.6B

$1.4B

$1.3B

0.33%

3.82%

2.65%

2024-03-31

$1.7B

$1.4B

$1.3B

0.16%

1.84%

2.61%

2023-12-31

$1.7B

$1.4B

0.39%

4.42%

2.83%

2023-09-30

$1.7B

$1.4B

$1.3B

0.40%

4.48%

2.86%

2023-06-30

$1.6B

$1.3B

$1.2B

0.41%

4.44%

2.95%

2023-03-31

$1.5B

$1.3B

$1.1B

0.50%

5.36%

3.10%

2022-12-31

$1.5B

$1.3B

$1.1B

0.73%

7.27%

3.24%

2022-09-30

$1.4B

$1.2B

$1.1B

0.70%

6.91%

3.23%

2022-06-30

$1.4B

$1.2B

$1.0B

0.58%

5.56%

3.11%

2022-03-31

$1.4B

$1.2B

$1.0B

0.62%

5.82%

3.00%

2021-12-31

$1.4B

$1.2B

$1.0B

0.66%

6.15%

3.18%

2021-09-30

$1.3B

$1.1B

$0.9B

0.71%

6.65%

3.25%

2021-06-30

$1.3B

$1.1B

$0.9B

0.77%

7.12%

3.24%

2021-03-31

$1.2B

$1.0B

$0.9B

0.91%

8.35%

3.33%

2020-12-31

$1.2B

$1.0B

$0.9B

0.61%

5.31%

3.28%

2020-09-30

$1.2B

$1.0B

$0.9B

0.45%

3.90%

3.32%

2020-06-30

$1.2B

$0.9B

0.37%

3.14%

3.38%

2020-03-31

$1.1B

$0.8B

-0.14%

-1.14%

3.48%

2019-12-31

$1.0B

$0.8B

0.51%

4.29%

3.49%

2019-09-30

$1.0B

$0.8B

0.57%

4.82%

3.47%

2019-06-30

$1.0B

$0.9B

$0.8B

0.55%

4.68%

3.41%

2019-03-31

$1.0B

$0.9B

$0.8B

0.88%

7.56%

3.45%

2018-12-31

$1.0B

$0.9B

$0.8B

0.63%

5.43%

3.43%

2018-09-30

$1.0B

$0.9B

$0.8B

0.67%

5.82%

3.40%

2018-06-30

$1.0B

$0.8B

0.69%

5.91%

3.34%

2017-12-31

$1.0B

$0.8B

$0.7B

0.63%

5.58%

3.51%