Palomar CEO's family trust sells 3,500 shares

The CEO and Chairman's direct holdings were reported at 160,166 shares, while the trust sales were made under a Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

Palomar Holdings, Inc. CEO and Chairman Mac Armstrong reported three Common Stock sales by Armstrong Family Trust totaling 3,500 shares on October 21, 2026. The reported weighted-average prices were $137.6048 for 1,135 shares, $138.3507 for 1,565 shares, and $139.2463 for 800 shares; the sales were under a Rule 10b5-1 trading plan. A separate direct holding entry reports 160,166 shares, including 2,852 shares purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan.

Insider Trade Summary 10b5-1

Net Seller: 3,500 shares

Net Sell 4 txns

Insider Armstrong Mac

Role CEO and Chairman

Sold 3,500 shs ($484K)

Type	Security	Shares	Price	Value
Sale	Common Stock F2	1,135	$137.6048	$156K
Sale	Common Stock F2	1,565	$138.3507	$217K
Sale	Common Stock F2	800	$139.2463	$111K
holding	Common Stock F1	--	--	--

Holdings After Transaction: Common Stock — 315,388 shares (Indirect, By Armstrong Family Trust); Common Stock — 160,166 shares (Direct)

Footnotes (2)

1. F1. Includes 2,852 shares purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan (ESPP).
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $136.9000 to $137.8900 (weighted average of $137.6048), inclusive; $137.9200 to $138.6900 (weighted average of $138.3507), inclusive; $138.9900 to $139.8500 (weighted average of $139.2463). The Reporting Person undertakes to provide to Palomar Holdings, Inc., any security holder of Palomar Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Key Figures

Shares sold: 3,500 shares First reported sale: 1,135 shares at $137.6048 per share Second reported sale: 1,565 shares at $138.3507 per share +3 more

6 metrics

Shares sold 3,500 shares Armstrong Family Trust sales on October 21, 2026

First reported sale 1,135 shares at $137.6048 per share Weighted-average price on October 21, 2026

Second reported sale 1,565 shares at $138.3507 per share Weighted-average price on October 21, 2026

Third reported sale 800 shares at $139.2463 per share Weighted-average price on October 21, 2026

Direct Common Stock holdings 160,166 shares Reported after the transactions dated October 21, 2026

Employee Stock Purchase Plan shares included 2,852 shares Purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan

Key Terms

weighted average price, Employee Stock Purchase Plan (ESPP), Rule 10b5-1 trading plan

3 terms

weighted average price financial

"Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Employee Stock Purchase Plan (ESPP) financial

"2019 Employee Stock Purchase Plan (ESPP)"

Rule 10b5-1 trading plan regulatory

"the sales were under a Rule 10b5-1 trading plan"

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many PLMR shares did Armstrong Family Trust sell?

Armstrong Family Trust sold 3,500 shares of Palomar Holdings, Inc. Common Stock on October 21, 2026, in three reported transactions. The weighted-average prices were $137.6048, $138.3507, and $139.2463 per share, respectively. The sales were reported under a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/22/2026 - 04:15 PM EDT Accepted by SEC EDGAR 10/22/2026 - 04:15 PM EDT 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^*

Armstrong Mac

(Last) (First) (Middle)

7979 IVANHOE AVENUE, SUITE 500

(Street)

LA JOLLA CALIFORNIA 92037

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Palomar Holdings, Inc. [ PLMR ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/21/2026

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								160,166(1)	D
Common Stock	10/21/2026		S		1,135	D	$137.6048(2)	317,753	I	By Armstrong Family Trust
Common Stock	10/21/2026		S		1,565	D	$138.3507(2)	316,188	I	By Armstrong Family Trust
Common Stock	10/21/2026		S		800	D	$139.2463(2)	315,388	I	By Armstrong 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. Includes 2,852 shares purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan (ESPP).

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $136.9000 to $137.8900 (weighted average of $137.6048), inclusive; $137.9200 to $138.6900 (weighted average of $138.3507), inclusive; $138.9900 to $139.8500 (weighted average of $139.2463). The Reporting Person undertakes to provide to Palomar Holdings, Inc., any security holder of Palomar Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Remarks:

	/s/ Angela Grant, Attorney-in-Fact	10/22/2026
	** 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)