5,000-Share Rule 144 Notice for BLKB (NASDAQ: BLKB)

Rhea-AI Filing Summary

BLKB submitted a Rule 144 notice concerning 5,000 shares of common stock proposed for resale. The shares arose from a Restricted Stock Unit vesting on 02/13/2026, and sales by Jon Olson of 5,000 shares were reported on 02/27/2026 with proceeds of $240,617.82 and $241,349.67.

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 Stock	Merrill Lynch One Bryant Park New York NY 10036	5000	245360.8	45933454	03/03/2026	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 Stock	02/13/2026	Restricted Stock Unit Vest	Issuer			5000	02/13/2026	Compensatory Payment

* 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
Jon Olson 65 Fairchild Street Charleston SC 29492	Common Stock	02/27/2026	5000	240617.82
Jon Olson 65 Fairchild Street Charleston SC 29492	Common Stock	02/27/2026	5000	241349.67

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 BLKB's Form 144 filing mean?

It notifies the SEC of a proposed resale of restricted or control securities. The filing lists a proposed resale of 5,000 common shares tied to an RSU vesting on 02/13/2026, allowing the seller to comply with Rule 144 resale conditions.

How many BLKB shares are listed for resale on this Form 144?

The filing lists a proposed resale of 5,000 common shares. That quantity is tied to a Restricted Stock Unit vesting event recorded on 02/13/2026 in the provided excerpt.

Who is identified as the seller in the BLKB filing?

The filing identifies Jon Olson as the reporting person associated with transactions. The excerpt shows Jon Olson reporting sales of 5,000 shares on 02/27/2026.

What proceeds from the reported sales are shown in the filing?

The excerpt shows reported proceeds of $240,617.82 and $241,349.67. These figures appear alongside the two reported 5,000-share sale entries dated 02/27/2026.

When did the underlying Restricted Stock Unit vest for the shares?

The Restricted Stock Unit vesting date is listed as 02/13/2026. The filing connects that vesting event to the 5,000 shares noted for resale.