Longeveron CFO reports initial 101,030-share stake

Longeveron Inc. reports the initial beneficial ownership position of its Chief Financial Officer, Marie Washburn.

Accepted by SEC EDGAR 07/21/2026 - 06:00 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Longeveron Inc. reports the initial beneficial ownership position of its Chief Financial Officer, Marie Washburn. She directly holds 101,030 shares of Class A Common Stock, including restricted stock units that are subject to time-based vesting, net of shares already withheld to cover related tax obligations. No new transactions are reported.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Washburn Marie

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Holding	Class A Common Stock F1	--	--	--

Holdings: Class A Common Stock — 101,030 shares (Direct)

Footnotes (1)

1. F1. Includes restricted stock units (RSUs) subject to time-based vesting, net of shares previously withheld to satisfy tax obligations in connection with such vesting.

Key Figures

Class A shares beneficially owned: 101,030 shares Non-derivative holding entries: 1

2 metrics

Class A shares beneficially owned 101,030 shares Direct holdings reported by CFO Marie Washburn following the reported position

Non-derivative holding entries 1 Number of Class A Common Stock positions reported in this Form 3

Key Terms

restricted stock units (RSUs), time-based vesting, tax obligations

3 terms

restricted stock units (RSUs) financial

"Includes restricted stock units (RSUs) subject to time-based vesting"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

time-based vesting financial

"RSUs subject to time-based vesting, net of shares previously withheld"

Time-based vesting is a schedule that gives employees or contractors ownership of granted stock or options gradually as they remain with a company, like unlocking rewards in a loyalty program the longer you stick around. For investors, it matters because it affects future share supply, management incentives and staff retention — all of which can influence company performance and dilution of existing shareholders.

tax obligations financial

"shares previously withheld to satisfy tax obligations in connection with such vesting"

FAQ

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

What does the Longeveron Inc. (LGVN) Form 3 filing for Marie Washburn show?

The Form 3 filing shows that CFO Marie Washburn beneficially owns 101,030 shares of Longeveron Class A Common Stock, including time-vested RSUs net of shares previously withheld to satisfy related tax obligations. It is an initial ownership report, not a record of new trades.

How many Longeveron Inc. (LGVN) shares does CFO Marie Washburn beneficially own?

CFO Marie Washburn beneficially owns 101,030 shares of Longeveron Class A Common Stock. This amount includes restricted stock units subject to time-based vesting, after accounting for shares already withheld to cover associated tax obligations on prior vesting events.

What type of security is reported in Longeveron (LGVN) CFO Marie Washburn’s Form 3?

The Form 3 reports holdings of Class A Common Stock of Longeveron Inc. The reported total of 101,030 shares includes both common shares and restricted stock units (RSUs) that are subject to time-based vesting conditions and related tax withholding.

How are restricted stock units (RSUs) treated in the Longeveron (LGVN) Form 3 for Marie Washburn?

The filing states that Marie Washburn’s reported 101,030 shares include restricted stock units (RSUs) subject to time-based vesting. The figure is net of shares previously withheld to satisfy tax obligations incurred when earlier RSUs vested.

Does the Longeveron Inc. (LGVN) Form 3 for Marie Washburn disclose any recent stock transactions?

The Form 3 does not disclose any buy or sell transactions. It functions as an initial statement of beneficial ownership, listing 101,030 Class A shares (including RSUs) held directly by the CFO, rather than recording new trades in Longeveron stock.

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

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Washburn Marie

(Last) (First) (Middle)

1951 NW 7TH AVENUE SUITE 520

(Street)

MIAMI FLORIDA 33136

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/13/2026

3. Issuer Name and Ticker or Trading Symbol
Longeveron Inc. [ LGVN ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

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

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

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	101,030(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes restricted stock units (RSUs) subject to time-based vesting, net of shares previously withheld to satisfy tax obligations in connection with such vesting.

Remarks:

Exhibit List - Exhibit 24 Power of Attorney

	/s/ Paul Lehr, Attorney-in-fact	07/21/2026
	** 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 5 (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 3: SEC 1473 (03-26)