Palomar CEO sells 3,500 shares in planned trade

Q: How many PLMR shares does Mac Armstrong hold directly after these transactions?

Mac Armstrong directly holds 160,068 PLMR common shares after the reported transactions. This direct holding includes 2,754 shares acquired through the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan.

Q: How were the PLMR shares characterized in the Form 4 for ownership type?

The 3,500 PLMR shares sold on August 21, 2026 were held indirectly by the Armstrong Family Trust, while the 160,068 shares reported separately are held directly by Mac Armstrong.

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Rhea-AI Filing Summary

Palomar Holdings, Inc. (PLMR) reported that CEO and Chairman Mac Armstrong, through the Armstrong Family Trust, sold a total of 3,500 shares of common stock on August 21, 2026 in three open-market transactions at weighted average prices of $129.6514, $130.4942, and $131.3684. The sales occurred in multiple trades within stated price ranges and are affirmed as made pursuant to a Rule 10b5-1 trading plan. Separately, Armstrong directly holds 160,068 shares of common stock, which includes 2,754 shares acquired through the 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 ($457K)

Type	Security	Shares	Price	Value
Sale	Common Stock ^F2	369	$129.6514	$48K
Sale	Common Stock ^F2	2,339	$130.4942	$305K
Sale	Common Stock ^F2	792	$131.3684	$104K
holding	Common Stock ^F1	--	--	--

Holdings After Transaction: Common Stock — 322,388 shares (Indirect, By Armstrong Family Trust); Common Stock — 160,068 shares (Direct)

Footnotes (2)

F1. Includes 2,754 shares purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan (ESPP).
F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.9550 to $129.9400 (weighted average of $129.6514), inclusive; $130.0200 to $131.0100 (weighted average of $130.4942), inclusive; $131.0400 to $131.7700 (weighted average of $131.3684). 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 (Armstrong Family Trust): 3,500 shares Weighted average sale price block 1: $129.6514 per share Weighted average sale price block 2: $130.4942 per share +3 more

6 metrics

Shares sold (Armstrong Family Trust) 3,500 shares Common stock sold indirectly on August 21, 2026

Weighted average sale price block 1 $129.6514 per share Sales within $128.9550–$129.9400 range on August 21, 2026

Weighted average sale price block 2 $130.4942 per share Sales within $130.0200–$131.0100 range on August 21, 2026

Weighted average sale price block 3 $131.3684 per share Sales within $131.0400–$131.7700 range on August 21, 2026

Direct holdings after transaction 160,068 shares Common stock held directly by Mac Armstrong after reported transactions

ESPP shares included in direct holdings 2,754 shares Shares purchased under the 2019 Employee Stock Purchase Plan included in 160,068 total

Key Terms

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

3 terms

Rule 10b5-1 regulatory

"transactions were made pursuant to a Rule 10b5-1 trading plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

weighted average price financial

"The price reported in 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

"shares purchased pursuant to the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan (ESPP)."

FAQ

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

What insider transaction did PLMR disclose for CEO Mac Armstrong?

Palomar Holdings, Inc. disclosed that CEO Mac Armstrong, via the Armstrong Family Trust, sold 3,500 PLMR common shares on August 21, 2026 in three open-market transactions at weighted average prices between $129.6514 and $131.3684.

At what prices were the PLMR shares sold by the Armstrong Family Trust?

The Armstrong Family Trust sold PLMR shares at weighted average prices of $129.6514, $130.4942, and $131.3684, with individual trades occurring in ranges from $128.9550–$131.7700, as disclosed in the footnote.

Were Mac Armstrong’s PLMR stock sales under a Rule 10b5-1 plan?

Yes. Palomar Holdings, Inc. indicated that the reported transactions were made pursuant to a Rule 10b5-1 trading plan, which means the trades followed a pre-arranged plan meeting regulatory requirements.

How many PLMR shares does Mac Armstrong hold directly after these transactions?

Mac Armstrong directly holds 160,068 PLMR common shares after the reported transactions. This direct holding includes 2,754 shares acquired through the Palomar Holdings, Inc. 2019 Employee Stock Purchase Plan.

How were the PLMR shares characterized in the Form 4 for ownership type?

The 3,500 PLMR shares sold on August 21, 2026 were held indirectly by the Armstrong Family Trust, while the 160,068 shares reported separately are held directly by Mac Armstrong.

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 08/24/2026 - 04:16 PM EDT Accepted by SEC EDGAR 08/24/2026 - 04:15 PM EDT

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).

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)
08/21/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock								160,068⁽¹⁾	D
Common Stock	08/21/2026		S		369	D	$129.6514⁽²⁾	325,519	I	By Armstrong Family Trust
Common Stock	08/21/2026		S		2,339	D	$130.4942⁽²⁾	323,180	I	By Armstrong Family Trust
Common Stock	08/21/2026		S		792	D	$131.3684⁽²⁾	322,388	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Includes 2,754 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 $128.9550 to $129.9400 (weighted average of $129.6514), inclusive; $130.0200 to $131.0100 (weighted average of $130.4942), inclusive; $131.0400 to $131.7700 (weighted average of $131.3684). 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	08/24/2026
	** 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)

Source: View Original Filing on SEC EDGAR