MainStreet Bancshares, Inc. - Common Stock, par value $4.00 per share (MNSB)

Q: What does CUSIP 56064Y100 represent in this 13F holders report?

CUSIP 56064Y100 is the security identifier for MNSB - MainStreet Bancshares, Inc. - Common Stock, par value $4.00 per share used to aggregate holder disclosures.

Q: How many institutions held MNSB - MainStreet Bancshares, Inc. - Common Stock, par value $4.00 per share in Q4 2020?

50 institutional investors reported MNSB - MainStreet Bancshares, Inc. - Common Stock, par value $4.00 per share for Q4 2020. Use the holders table for investor-level position and value details.

CUSIP: 56064Y100

Q4 2020 13F Holders as of 31 Dec 2020

Security type / class: Equity / Common Stock, par value $4.00 per share
Total 13F shares: 3,546,723
Total 13F value: $59,974,987
Share change: -471,725
SEC-reported price per share: $16.91
Number of holders: 50
Value change: -$7,707,353
Number of buys: 17
Number of sells: 19
Shares outstanding: 7,079,403

Security key

56064Y100

Report period

Q4 2020

Institutions

Top holders

MNSB full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 MainStreet Bancshares, Inc. SEC filings MainStreet Bancshares, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 56064Y100

Newer quarter: Q3 2025

Recent filing periods:

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of MNSB - MainStreet Bancshares, Inc. - Common Stock, par value $4.00 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BANC FUNDS CO LLC

Disclosed value leader

BANC FUNDS CO LLC

Comparable rows

0/15

Latest evidence

30 Sep 2020

13F Highest disclosed value: $8,431,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

BANC FUNDS CO LLC has the largest disclosed position value at $8.43M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BANC FUNDS CO LLC's linked filing trail.

Disclosed position value Top 5

BANC FUNDS CO LLC $8.43M

Curi Capital, LLC $5.83M

EJF Capital LP $4.92M

VANGUARD GROUP INC $4.31M

BlackRock Finance, Inc. $4.29M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BANC FUNDS CO LLC	13F Company 13F	— denominator unverified	$8,431,000 688,832 shares	—	30 Sep 2020
Curi Capital, LLC	13F Company 13F	— denominator unverified	$5,826,000 476,017 shares	—	30 Sep 2020
EJF Capital LP	13F Company 13F	— denominator unverified	$4,924,000 402,288 shares	—	30 Sep 2020
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$4,309,000 352,016 shares	—	30 Sep 2020
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$4,287,000 350,286 shares	—	30 Sep 2020
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	— denominator unverified	$2,897,000 236,693 shares	—	30 Sep 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

3,546,723

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2020 vs Q2 2026 Across Filers

Q2 2026 holders

Q4 2020 holders

Holder diff

-45

Investor	Q2 2026 Shares	Q4 2020 Shares	Share Diff	Share Chg %	Q2 2026 value	Q4 2020 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend