ALAB (NYSE: ALAB) affiliate Stefan Dyckerhoff plans multi-date stock sales

Rhea-AI Filing Summary

ALAB affiliate Stefan Dyckerhoff reported proposed sales of Common Stock via Form 144 through broker Stifel Nicolaus & Company Inc. The filing lists three proposed transactions: 11,599 shares for $2,029,828 on 04/17/2026, 13,399 shares for $2,346,435 on 04/20/2026, and 12,499 shares for $2,500,174 on 05/07/2026. The securities are Common Stock on the NYSE.

Insights

Securities Compliance Counsel

Form 144 filings notify the SEC of proposed affiliate sales under the securities act.

These entries show proposed dispositions by an affiliate using a broker; each row lists share count and gross proceeds. The broker named is Stifel Nicolaus & Company Inc. and the trades are recorded as Common Stock on the NYSE.

Regulatory focus rests on timely filing and accurate share/proceeds disclosure; subsequent confirmations of sale execution will appear in broker records or Form 4/Form 5 as applicable.

Equity Markets Analyst

Three modest block sales by an affiliate are recorded across April–May 2026.

The filing lists proposed sales of 11,599, 13,399, and 12,499 common shares with stated gross proceeds. The amounts are explicit in the filing and attributable to Stefan Dyckerhoff.

These are disclosure items rather than company actions; price impact depends on execution timing and market liquidity, neither of which is provided here.

Key Figures

Proposed sale 1: 11,599 shares Proposed sale 2: 13,399 shares Proposed sale 3: 12,499 shares +4 more

7 metrics

Proposed sale 1 11,599 shares proposed on <date>04/17/2026</date>

Proposed sale 2 13,399 shares proposed on <date>04/20/2026</date>

Proposed sale 3 12,499 shares proposed on <date>05/07/2026</date>

Proceeds 1 $2,029,828 gross proceeds shown for <date>04/17/2026</date>

Proceeds 2 $2,346,435 gross proceeds shown for <date>04/20/2026</date>

Proceeds 3 $2,500,174 gross proceeds shown for <date>05/07/2026</date>

Broker Stifel Nicolaus & Company Inc. listed as broker on filing

Key Terms

Form 144, Private Placement, Pro-rata distribution

3 terms

Form 144 regulatory

""144: Securities Sold During The Past 3 Months""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Private Placement financial

""Private Placement | Issuer""

A private placement is a way for companies to raise money by selling securities directly to a small group of investors instead of through a public offering. This process is often quicker and less regulated, making it similar to offering a special, exclusive investment opportunity to select individuals or institutions. For investors, it can provide access to unique investment options that are not available on public markets.

Pro-rata distribution financial

""Pro-rata distribution from Venture Fund""

A pro-rata distribution is when cash, shares, rights or other assets are divided among investors in proportion to their ownership stake, so each holder gets the same percentage of the total as their share of the company. Think of slicing a pie so everyone receives pieces sized to match how much of the pie they own. For investors this matters because it preserves relative ownership and determines how much value or new securities they receive, and whether they need to buy or sell to maintain their position.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Stifel Nicolaus & Company Inc 501 N Broadway St Louis MO 63102	12499	4553995.00	170210000	06/03/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/08/2019	Private Placement	Issuer			946	11/08/2019	Cash
Common	02/07/2020	Private Placement	Issuer			2559	02/07/2020	Cash
Common	05/17/2022	Private Placement	Issuer			661	05/17/2022	Cash
Common	08/15/2024	Pro-rata distribution from Venture Fund	Sutter Hill Ventures A CA LP which acquired shares from the Issuer			8333	05/17/2024	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Stefan Dyckerhoff 755 Page Mill Rd Ste A200 Palo Alto CA 94304	Common	04/17/2026	11599	2029828.00
Stefan Dyckerhoff 755 Page Mill Rd Ste A200 Palo Alto CA 94304	Common	04/20/2026	13399	2346435.00
Stefan Dyckerhoff 755 Page Mill Rd Ste A200 Palo Alto CA 94304	Common	05/07/2026	12499	2500174.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does ALAB Form 144 from Stefan Dyckerhoff disclose?

It discloses proposed sales of Common Stock by affiliate Stefan Dyckerhoff via Stifel Nicolaus. The filing lists three proposed transactions with share counts and gross proceeds dated 04/17/2026, 04/20/2026, and 05/07/2026.

How many shares does the Form 144 list for the 04/17/2026 entry?

The filing lists 11,599 shares for the 04/17/2026 entry with gross proceeds shown as $2,029,828. The row is attributed to Stefan Dyckerhoff and identifies the security as Common Stock.

What proceeds are shown for the 04/20/2026 proposed sale?

The 04/20/2026 line shows 13,399 shares with gross proceeds of $2,346,435. The filing lists Stifel Nicolaus as the broker and identifies the shares as Common Stock on the NYSE.

Does the Form 144 confirm execution of these sales?

No. Form 144 discloses proposed sales by an affiliate and the intended broker; it does not itself confirm trade execution. Execution or post-sale holdings would appear in subsequent broker records or Forms 4/5 if required.

Who is the broker named in the ALAB Form 144?