Coastal Financial (CCB) executive reports 229-share tax-withholding disposition

Rhea-AI Filing Summary

Coastal Financial Corp director and CCBX president Brian T. Hamilton reported a small tax-withholding share disposition tied to RSU vesting. On the transaction date, 229 shares of common stock were disposed of at $77.7221 per share to cover withholding taxes.

The footnotes explain this was done upon partial vesting of restricted stock units under a Rule 10b5-1 trading plan, indicating a pre-arranged, compensation-related event rather than an open-market trade. After the transaction, Hamilton directly owned 67,112 common shares, along with multiple RSU awards scheduled to vest over the next several years.

Insider Trade Summary 10b5-1

1 transaction reported

Mixed 1 txn

Insider Hamilton Brian T

Role President of CCBX

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	229	$77.7221	$18K

Holdings After Transaction: Common Stock — 67,112 shares (Direct, null)

Footnotes (1)

1. Represents shares sold in payment of withholding taxes upon partial vesting of RSUs pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. Includes the following pursuant to the 2018 Coastal Financial Corporation Omnibus Incentive Plan: (1) 12,210 restricted stock units (RSUs) with remaining shares vesting monthly in an approximately equal amount through April 30, 2028 (2) 2,714 RSUs that vest in approximately equal installments over 4 years (3) 502 RSUs that vest in approximately equal installments over 3 years (4) 15,000 performance-based RSUs - eligible to vest on April 30, 2028, subject to continuous employment and achievement of return on equity that is at least 80% of company comparator peer group. Each RSU represents the right to receive one share of common stock upon vesting.

Key Figures

Tax-withholding shares disposed: 229 shares Disposition price: $77.7221 per share Shares held after transaction: 67,112 shares +4 more

7 metrics

Tax-withholding shares disposed 229 shares Common Stock, disposition to cover withholding taxes

Disposition price <money>$77.7221</money> per share Price for 229-share tax-withholding disposition

Shares held after transaction 67,112 shares Direct common stock ownership following disposition

Time-based RSUs vesting to 2028 12,210 RSUs Remaining shares vest monthly through <date>April 30, 2028</date>

Four-year RSU grant 2,714 RSUs Vest in approximately equal installments over four years

Three-year RSU grant 502 RSUs Vest in approximately equal installments over three years

Performance-based RSUs 15,000 RSUs Eligible to vest on <date>April 30, 2028</date> if conditions met

Key Terms

Rule 10b5-1 trading plan, restricted stock units (RSUs), performance-based RSUs, withholding taxes

4 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units (RSUs) financial

"partial vesting of RSUs pursuant to a Rule 10b5-1 trading plan"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

performance-based RSUs financial

"15,000 performance-based RSUs - eligible to vest on April 30, 2028"

Performance-based restricted stock units (RSUs) are promises to deliver company shares to employees only if the business meets specific goals, such as revenue, profit, stock-price targets, or strategic milestones. For investors, they matter because they change future share supply and align management incentives with company results—like a salesperson whose bonus only pays out when sales targets are hit—so they can affect earnings, dilution, and confidence in leadership.

withholding taxes financial

"shares sold in payment of withholding taxes upon partial vesting of RSUs"

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 07:59 PM Accepted by SEC EDGAR 07/01/2026 - 07:59 PM Learn about SEC filing dates

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

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

X

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^*

Hamilton Brian T

(Last) (First) (Middle)

5415 EVERGREEN WAY

(Street)

EVERETT WASHINGTON 98203

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
COASTAL FINANCIAL CORP [ CCB ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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

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

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

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	07/01/2026		F		229(1)	D	$77.7221	67,112(2)	D

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. Represents shares sold in payment of withholding taxes upon partial vesting of RSUs pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

2. Includes the following pursuant to the 2018 Coastal Financial Corporation Omnibus Incentive Plan: (1) 12,210 restricted stock units (RSUs) with remaining shares vesting monthly in an approximately equal amount through April 30, 2028 (2) 2,714 RSUs that vest in approximately equal installments over 4 years (3) 502 RSUs that vest in approximately equal installments over 3 years (4) 15,000 performance-based RSUs - eligible to vest on April 30, 2028, subject to continuous employment and achievement of return on equity that is at least 80% of company comparator peer group. Each RSU represents the right to receive one share of common stock upon vesting.

Remarks:

	/s/ Leilani McKernan, as Attorney-in-fact	07/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did CCB executive Brian Hamilton report on Form 4?

Brian T. Hamilton reported a disposition of 229 shares of Coastal Financial common stock. The shares were used to pay withholding taxes triggered by partial vesting of restricted stock units under a pre-arranged Rule 10b5-1 trading plan.

Was the CCB Form 4 transaction an open-market sale of shares?

No, the transaction was a tax-withholding disposition of 229 shares, not an open-market sale. The shares were sold to cover withholding taxes upon RSU vesting pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

How many Coastal Financial shares does Brian Hamilton hold after this Form 4?

After the tax-withholding transaction, Brian T. Hamilton directly held 67,112 shares of Coastal Financial common stock. This direct position is in addition to multiple RSU awards that may convert into further shares as they vest over future periods.

What restricted stock units (RSUs) are outstanding for the CCB insider?

Footnotes state Hamilton holds 12,210 RSUs vesting monthly through April 30, 2028, 2,714 RSUs vesting over four years, 502 RSUs vesting over three years, and 15,000 performance-based RSUs eligible to vest on April 30, 2028, subject to conditions.

What is the significance of the Rule 10b5-1 trading plan in this CCB filing?

The filing notes the tax-withholding share disposition occurred under a Rule 10b5-1 trading plan. Such plans are established in advance, indicating this small transaction was pre-scheduled and tied to compensation, reducing the informational value of its timing for investors.