[Form 4] Enterprise Bancorp Inc. Insider Trading Activity

Rhea-AI Filing Summary

United States Antimony Corporation (NYSE American: UAMY) has secured a secondary listing on the newly formed NYSE Texas Exchange. On June 27, 2025, the Exchange formally approved the Company’s application, and trading of UAMY shares on NYSE Texas is expected to begin Tuesday, July 1, 2025. The Company will retain its primary listing on NYSE American and continue to trade under the ticker “UAMY” on both venues. A press release announcing the dual-listing is filed as Exhibit 99.1 and incorporated into this Form 8-K/A under Item 8.01. No other operational or financial information was disclosed, and the filing is furnished—not filed—for Exchange Act liability purposes.

Positive

• Dual listing on NYSE Texas could broaden investor reach and enhance share liquidity without diluting existing shareholders.

Negative

• None.

Insights

Equity Markets Specialist

TL;DR: Dual listing may improve liquidity and visibility but is not a transformative financial event.

The additional NYSE Texas listing offers UAMY shareholders an alternative trading venue, potentially tightening bid-ask spreads and expanding the investor base. Because the Company maintains its NYSE American listing and no capital raise is attached, the move is largely administrative. Market impact will depend on NYSE Texas’ trading volume and market-maker participation. Absent new financial data or strategic initiatives, the event is modestly positive but not materially transformative for valuation.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

KING MARY JANE

(Last) (First) (Middle)

C/O ENTERPRISE BANK

222 MERRIMACK ST

(Street)

LOWELL MA 01852

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ENTERPRISE BANCORP INC /MA/ [ EBTC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2025		D		15,309	D	(1)	0(2)	D
Common Stock	07/01/2025		D		2,500	D	(1)	0	I	By Husband
Common Stock	07/01/2025		D		2,200	D	(1)	0	I	By King Family Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Pursuant to the Agreement and Plan of Merger, dated as of December 8, 2024 (the "Merger Agreement"), by and among Enterprise Bancorp, Inc. ("Enterprise"), Enterprise Bank and Trust Company, Independent Bank Corp. ("Independent") and Rockland Trust Company, each issued and outstanding share of Enterprise common stock was converted into the right to receive (i) $2.00 in cash and (ii) 0.60 shares of Independent common stock (subject to the payment of cash in lieu of fractional shares).

2. In accordance with the Merger Agreement, all unvested shares of restricted stock automatically vested in full at the Effective Time (as defined in the Merger Agreement) to the extent not previously forfeited, and was considered outstanding shares of Enterprise common entitled to receive the Merger Consideration (as defined in the Merger Agreement).

	/s/ Joseph R. Lussier as attorney-in-fact for Mary Jane King	07/01/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

When will UAMY start trading on NYSE Texas?

Trading is expected to commence on Tuesday, July 1, 2025.

Will United States Antimony Corporation change its ticker symbol?

No. The Company will continue to trade under the ticker “UAMY” on both NYSE American and NYSE Texas.

Does the dual listing involve a share offering or dilution?

The filing discloses no new share issuance; the listing is administrative only.

Is NYSE American still the primary listing for UAMY?

Yes. The Company will maintain its primary listing on NYSE American while also trading on NYSE Texas.

Where can I read the official press release about the dual listing?

The press release is filed as Exhibit 99.1 to this Form 8-K/A.