Jonathan Barrett MacKenzie - 13 Mar 2026 Form 4 Insider Report for MEDIFAST INC (MED)

Reporting relationship: VP, Finance & CAO
Issuer ticker: MED
Reported as of: 13 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Mar 2026, 17:54:41 UTC
Prior SEC filing: 27 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Jason L. Groves, attorney-in-fact

Key filing fact

Jonathan Barrett MacKenzie filed Form 4 for MEDIFAST INC (MED) on 27 Mar 2026.

Key facts

This page summarizes Jonathan Barrett MacKenzie's Form 4 filing for MEDIFAST INC (MED).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 27 Mar 2026, 17:54.

Change

Previous filing in this sequence was filed on 27 Mar 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001883230 Primary reporting owner

MacKenzie Jonathan Barrett

Relationship: VP, Finance & CAO
Address: C/O MEDIFAST, INC., 1501 S. CLINTON STREET, SUITE 500, BALTIMORE
Signature: /s/ Jason L. Groves, attorney-in-fact
Signature date: 27 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MED transaction

Common Stock

Tax liability

Transaction value
Shares: -198
Change %: -1.8%
Price: $9.62^*
Shares after: 10,940
Date: 13 Mar 2026
Ownership: Direct
Footnotes: F1

MED transaction

Common Stock

Tax liability

Transaction value
Shares: -70
Change %: -0.64%
Price: $10.05^*
Shares after: 10,870
Date: 17 Mar 2026
Ownership: Direct
Footnotes: F1

MED transaction

Common Stock

Tax liability

Transaction value
Shares: -862
Change %: -7.9%
Price: $9.59^*
Shares after: 10,008
Date: 25 Mar 2026
Ownership: Direct
Footnotes: F1

MED transaction

Common Stock

Award

Transaction value
Shares: +10,830
Change %: +108%
Price: $0.000000^*
Shares after: 20,838
Date: 25 Mar 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents the number of shares withheld by the Issuer upon the vesting of a restricted stock unit grant to cover the executive's withholding tax associated with the satisfaction of all vesting conditions. The number of shares withheld is based upon the closing price of a share of Medifast common stock on the vesting date, or if the vesting date fell on a weekend or market holiday, upon the closing price of a share of Medifast common stock on the most recent prior market day.

Footnote F2

Represents a grant of restricted stock units issued to the reporting person under the 2012 Share Incentive Plan that will vest in three equal annual installments beginning on the first anniversary of the grant date. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.