Astera Labs director sells 12,499 shares under plan

The director's sales were made under a Rule 10b5-1 plan adopted December 1, 2025; the RSU award is subject to continuous service through vesting.

Rhea-AI Filing Summary

Astera Labs, Inc. director Stefan A. Dyckerhoff reported sales of 12,499 shares of common stock on October 7, 2026, at $376.06 per share: 3,505 shares held directly, 8,333 held by a trust of which he is trustee, and 661 held by a limited partnership whose general partner is a trust of which he is trustee. The sales were made under a Rule 10b5-1 trading plan adopted December 1, 2025. On October 1, he was granted 68 restricted stock units in lieu of cash compensation for quarterly non-employee director retainer fees. They vest 100% on the three-month anniversary of the August 15, 2026 Vesting Commencement Date, subject to his continuous service relationship through the applicable vesting date.

Insider Trade Summary 10b5-1

Net Seller: 12,499 shares

Net Sell 9 txns

Insider Dyckerhoff Stefan A

Role Director

Sold 12,499 shs ($4.70M)

Type	Security	Shares	Price	Value
Sale	Common Stock F3, F2	3,505	$376.06	$1.32M
Sale	Common Stock F3, F4	8,333	$376.06	$3.13M
Sale	Common Stock F3, F5	661	$376.06	$249K
Grant/Award	Common Stock F1, F2	68	$311.57	$21K
holding	Common Stock F6	--	--	--
holding	Common Stock F6	--	--	--
holding	Common Stock F6	--	--	--
holding	Common Stock F6	--	--	--
holding	Common Stock F6	--	--	--

Holdings After Transaction: Common Stock — 47,019 shares (Direct); Common Stock — 286,400 shares (Indirect, By Trust); Common Stock — 2,648 shares (Indirect, By Limited Partnership (TF)); Common Stock — 3,767 shares (Indirect, By DIFT-2); Common Stock — 3,765 shares (Indirect, By DIFT-AMD); Common Stock — 3,765 shares (Indirect, By DIFT-BAD); Common Stock — 3,765 shares (Indirect, By DIFT-SHD); Common Stock — 3,765 shares (Indirect, By DIFT-IND)

Footnotes (6)

1. F1. These shares represent an award of restricted stock units ("RSUs") granted on October 1, 2026, under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan in lieu of cash compensation for quarterly non-employee director retainer fees pursuant to the Reporting Person's election. The award provides that 100% of the RSUs will vest on the three-month anniversary of the Vesting Commencement Date of August 15, 2026, subject to the Reporting Person's continuous service relationship with the Issuer through the applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares.
2. F2. Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares.
3. F3. Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.
4. F4. Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.
5. F5. Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.
6. F6. Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

Key Figures

Shares sold: 12,499 shares Sale price: $376.06 per share Direct shares sold: 3,505 shares +5 more

8 metrics

Shares sold 12,499 shares Reported sales on October 7, 2026

Sale price $376.06 per share Sales on October 7, 2026

Direct shares sold 3,505 shares Sale on October 7, 2026

Shares sold through trust 8,333 shares Sale on October 7, 2026

Shares sold through limited partnership 661 shares Sale on October 7, 2026

Trust shares after transaction 286,400 shares Reported after the October 7, 2026 sale

Limited partnership shares after transaction 2,648 shares Reported after the October 7, 2026 sale

Restricted stock units granted 68 units Granted October 1, 2026

Key Terms

Rule 10b5-1 trading plan, restricted stock units ("RSUs"), Vesting Commencement Date, pecuniary interest

4 terms

Rule 10b5-1 trading plan regulatory

"Shares were sold pursuant to 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.

restricted stock units ("RSUs") financial

"award of restricted stock units ("RSUs")"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

Vesting Commencement Date financial

"anniversary of the Vesting Commencement Date of August 15, 2026"

The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.

pecuniary interest financial

"except as to the Reporting Person's pecuniary interest"

FAQ

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

How many shares did ALAB director Stefan A. Dyckerhoff sell?

Stefan A. Dyckerhoff reported sales of 12,499 Astera Labs common shares on October 7, 2026, at $376.06 per share: 3,505 shares held directly, 8,333 through a trust, and 661 through a limited partnership. The sales were made under a Rule 10b5-1 trading plan adopted December 1, 2025.

What ALAB shares were reported after the insider sales?

The reported post-transaction positions included 286,400 shares held by a trust of which Dyckerhoff is trustee and 2,648 shares held by a limited partnership whose general partner is a trust of which he is trustee.

What stock award did ALAB director Stefan A. Dyckerhoff receive?

Astera Labs granted Dyckerhoff 68 restricted stock units on October 1, 2026, in lieu of cash compensation for quarterly non-employee director retainer fees. The units vest 100% on the three-month anniversary of the August 15, 2026 Vesting Commencement Date, subject to his continuous service relationship through the applicable vesting date.

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

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Available on EDGAR 10/09/2026 - 06:36 PM Accepted by SEC EDGAR 10/09/2026 - 06:36 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^*

Dyckerhoff Stefan A

(Last) (First) (Middle)

755 PAGE MILL ROAD, SUITE A-200

(Street)

PALO ALTO CALIFORNIA 94304-1005

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Astera Labs, Inc. [ ALAB ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		A		68(1)	A	$311.57	50,524	D(2)
Common Stock	10/07/2026		S(3)		3,505	D	$376.06	47,019	D(2)
Common Stock	10/07/2026		S(3)		8,333	D	$376.06	286,400	I	By Trust(4)
Common Stock	10/07/2026		S(3)		661	D	$376.06	2,648	I	By Limited Partnership (TF)(5)
Common Stock								3,767	I	By DIFT-2(6)
Common Stock								3,765	I	By DIFT-AMD(6)
Common Stock								3,765	I	By DIFT-BAD(6)
Common Stock								3,765	I	By DIFT-SHD(6)
Common Stock								3,765	I	By DIFT-IND(6)

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. These shares represent an award of restricted stock units ("RSUs") granted on October 1, 2026, under the Astera Labs, Inc. 2024 Stock Option and Incentive Plan in lieu of cash compensation for quarterly non-employee director retainer fees pursuant to the Reporting Person's election. The award provides that 100% of the RSUs will vest on the three-month anniversary of the Vesting Commencement Date of August 15, 2026, subject to the Reporting Person's continuous service relationship with the Issuer through the applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares.

2. Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares.

3. Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.

4. Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

5. Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

6. Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

	/s/ Kanwalpreet S. Kalra, Attorney-in-Fact	10/09/2026
	** 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)