Coastal Financial (CCB) insider sale under 10b5-1 plan with tax withholding

Rhea-AI Filing Summary

Coastal Financial Corp director and CCBX president Brian T. Hamilton reported an open‑market sale of company stock and a separate tax‑related share disposition. He sold 3,079 shares of common stock at an average price of $75.4378 per share in an open‑market transaction.

In a separate transaction, 230 shares were disposed of to cover withholding taxes upon partial vesting of restricted stock units (RSUs), which is a non‑market event. After these transactions, he directly holds 74,571 shares of common stock, plus additional RSUs scheduled to vest over several years.

According to a footnote, the sale was effected under a pre‑arranged Rule 10b5‑1 trading plan adopted by the reporting person, indicating the timing was planned in advance rather than discretionary.

Insider Trade Summary 10b5-1

Net Seller: 3,079 shares ($232,273)

Net Sell 2 txns

Insider Hamilton Brian T

Role President of CCBX

Sold 3,079 shs ($232K)

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	230	$75.4378	$17K
Sale	Common Stock	3,079	$75.4378	$232K

Holdings After Transaction: Common Stock — 77,650 shares (Direct, null)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person. Represents shares sold in payment of withholding taxes upon partial vesting of RSUs. Includes the following pursuant to the 2018 Coastal Financial Corporation Omnibus Incentive Plan: (1) 13,373 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) 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. (4) 502 RSUs that vest in three approximately equal annual remaining installments. Each RSU represents the right to receive one share of common stock upon vesting.

Key Figures

Open-market shares sold: 3,079 shares Sale price per share: $75.4378 per share Tax-withholding shares: 230 shares +5 more

8 metrics

Open-market shares sold 3,079 shares Common Stock, transaction code S on May 1, 2026 at $75.4378

Sale price per share $75.4378 per share Open-market sale of 3,079 common shares

Tax-withholding shares 230 shares Code F disposition to pay withholding taxes on RSU vesting

Direct shares after transactions 74,571 shares Common Stock directly owned following open-market sale

Monthly vesting RSUs 13,373 RSUs Vest monthly in approximately equal amounts through April 30, 2028

Four-year vesting RSUs 2,714 RSUs Vest in approximately equal installments over 4 years

Performance-based RSUs 15,000 RSUs Eligible to vest on April 30, 2028, subject to conditions

Three-year vesting RSUs 502 RSUs Vest in three approximately equal remaining annual installments

Key Terms

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

5 terms

Rule 10b5-1 plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

restricted stock units (RSUs) financial

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

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, subject to continuous employment and achievement of return on equity criteria."

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

"Represents 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.

Omnibus Incentive Plan financial

"Includes the following pursuant to the 2018 Coastal Financial Corporation Omnibus Incentive Plan:"

An omnibus incentive plan is a single, flexible program a company uses to give employees and executives different types of pay tied to performance — for example stock options, restricted shares, cash bonuses and other awards — all governed by one set of rules. It matters to investors because it determines how many new shares may be created, how leaders are motivated and how much the company will spend on compensation over time; think of it as a master toolbox that affects both costs and the total share supply.

Form 4 Insider Transactions: What Each Field Means →

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)
05/01/2026

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	05/01/2026		F		230(1)(2)	D	$75.4378	77,650(3)	D
Common Stock	05/01/2026		S		3,079(1)	D	$75.4378	74,571(3)	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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person.

2. Represents shares sold in payment of withholding taxes upon partial vesting of RSUs.

3. Includes the following pursuant to the 2018 Coastal Financial Corporation Omnibus Incentive Plan: (1) 13,373 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) 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. (4) 502 RSUs that vest in three approximately equal annual remaining installments. Each RSU represents the right to receive one share of common stock upon vesting.

Remarks:

	/s/ Melisa Nelson, as Attorney-in-fact	05/01/2026
	** 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 did Brian T. Hamilton report in this Form 4 for CCB (Coastal Financial)?

Brian T. Hamilton reported selling 3,079 shares of Coastal Financial common stock at $75.4378 per share and a separate disposition of 230 shares to cover withholding taxes on RSU vesting, while retaining 74,571 shares directly plus additional unvested RSUs.

Was the Coastal Financial (CCB) insider sale made under a Rule 10b5-1 plan?

Yes. A footnote states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Brian T. Hamilton, meaning the transactions were pre‑scheduled in advance and not timed at his sole discretion in response to short‑term market conditions.

How many Coastal Financial (CCB) shares did the insider sell and at what price?

Brian T. Hamilton sold 3,079 shares of Coastal Financial common stock in an open‑market transaction at an average price of $75.4378 per share, according to the Form 4, representing a portion of his overall direct shareholding in the company.

What is the size of Brian T. Hamilton’s remaining CCB shareholding after these transactions?

Following the reported transactions, Brian T. Hamilton directly holds 74,571 shares of Coastal Financial common stock. He also has multiple tranches of RSUs outstanding that may convert into additional shares over time, subject to vesting schedules and performance conditions described.

Were any of the Coastal Financial (CCB) shares disposed for tax withholding purposes?

Yes. The Form 4 shows 230 shares were disposed of to pay withholding taxes upon partial vesting of RSUs. This F‑code transaction is characterized as a tax‑withholding disposition, not an open‑market sale, and typically occurs automatically upon vesting.

What RSU awards does Brian T. Hamilton hold under Coastal Financial’s 2018 Omnibus Incentive Plan?

A footnote states his holdings include 13,373 RSUs vesting monthly through April 30, 2028, 2,714 RSUs vesting over four years, 15,000 performance‑based RSUs eligible to vest by April 30, 2028, and 502 RSUs vesting in three remaining annual installments.