Frank K. Lee discloses multiple PLAB sales (NASDAQ: PLAB) and 5,000-option sale

Rhea-AI Filing Summary

Insider filing reports multiple open-market disposals of Common Stock by Frank K. Lee and a planned sale of 5,000 shares tied to options. The record lists executed sales on entries totaling individual blocks of 10,000 or 5,000 shares between and , with per-trade gross proceeds shown. A separate line shows 5,000 shares to be sold from options granted 01/02/2018 with payment in cash.

Insights

Securities Compliance Analyst

Rule 144 notice detailing multiple dispositions by a reporting person and a planned options-derived sale.

The filing lists several open-market sales by Frank K. Lee in Jan–Apr 2026, each with share counts and gross proceeds. It also shows a planned sale of 5,000 shares related to options granted on 01/02/2018 to be settled for cash.

These are routine liquidity events disclosed under Rule 144; cash‑flow treatment for each trade is shown as gross proceeds per trade. Further filings may show final settlement details.

Key Figures

Planned option-derived sale: 5,000 shares Sale example — 01/12/2026: 10,000 shares Sale example — 01/13/2026: 10,000 shares +2 more

5 metrics

Planned option-derived sale 5,000 shares Options granted 01/02/2018; listed 04/09/2026; settlement: Cash

Sale example — 01/12/2026 10,000 shares Gross proceeds $330,500.00

Sale example — 01/13/2026 10,000 shares Gross proceeds $344,156.58

Sale example — 03/23/2026 10,000 shares Gross proceeds $390,000.00

Sale example — 03/26/2026 5,000 shares Gross proceeds $204,000.00

Key Terms

Rule 144, Form 144, Options Granted

3 terms

Rule 144 regulatory

"Form 144 notice of proposed sale under Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Form 144 regulatory

"Filer Information and Securities To Be Sold lines"

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.

Options Granted financial

"Options Granted - 01/02/2018 shown with 5,000 shares"

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

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	5000	220000.00	58966394	04/09/2026	NASDAQ

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	04/09/2026	Options Granted - 01/02/2018	Issuer			5000	04/09/2026	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
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	01/12/2026	10000	330500.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	01/13/2026	10000	344156.58
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	01/15/2026	10000	341360.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	01/16/2026	10000	345090.55
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	03/19/2026	10000	358024.17
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	03/23/2026	10000	390000.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	03/26/2026	5000	204000.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	04/01/2026	5000	210000.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	04/06/2026	5000	202650.00
Frank K. Lee 15 Secor Road Brookfield CT 06804	Common	04/08/2026	5000	216350.00

144: Remarks and Signature

Remarks

Date of Notice

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 PLAB Form 144 from Frank K. Lee disclose?

It discloses multiple share sales and a planned options sale. The filing lists executed sales of 10,000 and 5,000 share blocks between January and April 2026 with gross proceeds per trade, and a planned sale of 5,000 shares from options granted 01/02/2018.

How many shares is Frank K. Lee planning to sell per the filing?

The filing shows a planned sale of 5,000 shares tied to options. That line is labeled "Options Granted - 01/02/2018" with 5,000 shares and settlement type "Cash" dated 04/09/2026 in the excerpt.

What were the sizes and proceeds of recent sales in the filing?

The excerpt lists multiple 10,000-share and 5,000-share trades. Example trades include 10,000 shares for $330,500 and 10,000 shares for $344,156.58, plus several 5,000-share trades with proceeds shown (e.g., $204,000).

Does the filing state the transaction method or payment type?

Yes; the planned 5,000-share sale is indicated as cash. Individual executed trades include gross proceeds per trade; the options-derived line explicitly shows "Cash" as the settlement method for 5,000 shares.

Is this Form 144 reporting an issuance or a resale registration?

This Form 144 is a notice of resale/disposal by an affiliate or reporting person. The content lists sales by an individual (Frank K. Lee) and a planned option-derived disposition; it is a disclosure of proposed and completed disposals, not a registration of new securities.