Gerald Blumenstock reports 1,015-share sale — ACellis (NASDAQ: ACLS)

Rhea-AI Filing Summary

ACLS filed a Form 144 reporting a disposition of Common Stock. Gerald Blumenstock reported a sale of 1,015 shares on 05/14/2026. The filing also lists $164,749.73 alongside that transaction. The securities include restricted stock vesting under a registered plan dated 05/15/2026.

Insights

Insider Transactions Analyst

Routine Rule 144 notice: a director/affiliate reported a small share disposition.

The filing lists a sale of 1,015 shares by Gerald Blumenstock on 05/14/2026 with a corresponding figure of $164,749.73. It also references restricted stock vesting under a registered plan on 05/15/2026.

This is a regulatory notice of an intended disposition under Rule 144 rather than an operational or financial development. Cash‑flow treatment and whether proceeds went to the issuer or the holder are not specified in the excerpt; subsequent filings would show further detail if material.

Key Figures

Shares sold: 1,015 shares Proceeds listed: $164,749.73 Restricted stock vesting date: 05/15/2026 +2 more

5 metrics

Shares sold 1,015 shares Disposition date <date>05/14/2026</date>

Proceeds listed $164,749.73 Associated with the 1,015-share transaction

Restricted stock vesting date 05/15/2026 Vesting under a registered plan

Form type Form 144 Rule 144 notice of proposed sale

Exchange NASDAQ Market identifier listed in excerpt

Key Terms

Form 144, restricted stock vesting, registered plan, Rule 144

4 terms

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

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.

restricted stock vesting financial

"Restricted stock vesting under a registered plan"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

registered plan regulatory

"Restricted stock vesting under a registered plan dated 05/15/2026"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

Rule 144 regulatory

"144: Securities To Be Sold"

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 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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1161	177284.70	30734000	05/21/2026	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	05/15/2026	Restricted stock vesting under a registered plan	Issuer			1161	05/15/2026	Not Applicable

* 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
GERALD BLUMENSTOCK 108 Cherry Hill Drive Beverly MA 01915	Common	05/14/2026	1015	164749.73

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 ACLS's Form 144 disclose about the transaction?

It discloses a reported disposition of 1,015 shares by Gerald Blumenstock on 05/14/2026. The filing pairs that share count with $164,749.73 and notes restricted stock vesting under a registered plan dated 05/15/2026.

Who is the reporting person on the ACLS Form 144?

The reporting person is Gerald Blumenstock, listed with an address in Beverly, MA. The filing links his activity to Common Stock transactions dated 05/14/2026 and related vesting on 05/15/2026.

Does the filing state the reason for the sale in ACLS's Form 144?

The excerpt indicates the securities include restricted stock vesting under a registered plan dated 05/15/2026. No additional reason or purpose for the disposition is provided in the provided content.

What exchanges or securities are referenced in the ACLS Form 144?

The filing references Common Stock and lists NASDAQ as the market identifier. Specific CUSIP or broker identifiers appear in the excerpt but no execution venue or broker details are provided.

When did the restricted shares vest according to the ACLS excerpt?

The restricted stock vesting is dated 05/15/2026 and is described as under a registered plan. That vesting date is shown separately from the reported sale date of 05/14/2026.