Key facts
- MED - MEDIFAST INC has 12 insiders with reported activity on this page.
- Net insider value flow over the last year: +$246,677.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 12 Insiders of MEDIFAST INC
- Symbol
- MED on NYSE
- Location
- Baltimore, MD
Change
- Buy value: $246,677; sell value: $0.
- Net share flow: +23,059.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$246,677.
Buys
$246,677
Shares: 23,059
Insiders: 2
Sells
$0
Shares: 0
Insiders: 0
Net
+$246,677
Shares: +23,059
Insiders: 2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 22,678 | 0 | $241,675 | $0 | +$241,675 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 381 | 0 | $5,003 | $0 | +$5,003 |
MEDIFAST INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Daniel R. Chard | Chairman & CEO, Director | $3,787,830 | +$183,727 | +5.1% | Mixed | 13 Mar 2026 |
| Kevin G. Byrnes | Director | $1,027,977 | Mixed | 11 Nov 2021 | ||
| James P. Maloney | Chief Financial Officer | $779,992 | Mixed | 13 Mar 2026 | ||
| Jeffrey J. Brown | Director | $573,487 | Mixed | 25 Jun 2025 | ||
| Ming Xian | Director | $430,393 | Mixed | 25 Jun 2025 | ||
| Scott Schlackman | Director | $382,775 | +$62,950 | +20% | Filing P/S | 08 May 2026 |
| Michael A. Hoer | Director | $351,575 | Mixed | 25 Jun 2025 | ||
| Andrea B. Thomas | Director | $323,030 | Mixed | 25 Jun 2025 | ||
| Elizabeth A. Geary | Director | $262,880 | Mixed | 25 Jun 2025 | ||
| Jonathan Barrett MacKenzie | VP, Finance & CAO | $222,549 | Mixed | 13 Mar 2026 | ||
| Nicholas Mark Johnson | President | $195,833 | Mixed | 05 Jan 2026 | ||
| Constance J. Hallquist | Former Director | $148,251 | Mixed | 06 Oct 2023 |
Top shareholders of MEDIFAST INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC |
13D/G
13F
|
Company |
7%
|
773,710
|
$8,139,429 | -$1,212,093 | 02 Jan 2026 | |
| Citadel Securities GP LLC |
13D/G
|
— |
6.5%
|
715,910
|
$7,531,373 | $0 | 31 Mar 2026 | |
| Steamboat Capital Partners, LLC |
13F
13D/G
|
Company |
6%
from 13D/G
|
707,590
|
$7,210,342 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
13D/G
|
Company |
5.7%
from 13D/G
|
631,539
|
$6,435,382 | — | 31 Mar 2026 | |
| SUSQUEHANNA SECURITIES, LLC |
13D/G
|
G1 Execution Services, LLC |
1.4%
|
148,944
|
$1,741,155 | -$5,915,152 | 31 Dec 2025 | |
| Daniel R. Chard |
3/4/5
|
Chairman & CEO, Director |
3.2%
|
355,609
|
$3,787,830 | +$183,727 | 13 Mar 2026 | |
| James P. Maloney |
3/4/5
|
Chief Financial Officer |
0.66%
|
73,033
|
$779,992 | — | 13 Mar 2026 | |
| Jeffrey J. Brown |
3/4/5
|
Director |
0.39%
|
42,811
|
$573,487 | — | 25 Jun 2025 | |
| Scott Schlackman |
3/4/5
|
Director |
0.28%
|
30,549
|
$382,775 | +$62,950 | 08 May 2026 | |
| Michael A. Hoer |
3/4/5
|
Director |
0.24%
|
26,139
|
$351,575 | — | 25 Jun 2025 | |
| Andrea B. Thomas |
3/4/5
|
Director |
0.22%
|
24,017
|
$323,030 | — | 25 Jun 2025 | |
| Jonathan Barrett MacKenzie |
3/4/5
|
VP, Finance & CAO |
0.19%
|
20,838
|
$222,549 | — | 13 Mar 2026 | |
| Elizabeth A. Geary |
3/4/5
|
Director |
0.18%
|
19,545
|
$262,880 | — | 25 Jun 2025 | |
| BlackRock, Inc. |
13F
|
Company |
8.6%
|
944,453
|
$9,623,975 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
4%
|
444,467
|
$4,529,119 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
3.3%
|
361,762
|
$3,686,270 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
3.1%
|
338,158
|
$3,445,830 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
3%
|
325,312
|
$3,314,942 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
253,315
|
$2,581,952 | — | 31 Mar 2026 | |
| Man Group plc |
13F
|
Company |
2.1%
|
236,212
|
$2,407,000 | — | 31 Mar 2026 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
2%
|
224,280
|
$2,285,413 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
2%
|
222,638
|
$2,268,681 | — | 31 Mar 2026 | |
| Peapod Lane Capital LLC |
13F
|
Company |
2%
|
219,063
|
$2,213,788 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
1.8%
|
202,829
|
$2,066,828 | — | 31 Mar 2026 | |
| Lido Advisors, LLC |
13F
|
Company |
1.7%
|
183,035
|
$1,865,130 | — | 31 Mar 2026 | |
| Trexquant Investment LP |
13F
|
Company |
1.6%
|
180,081
|
$1,835,025 | — | 31 Mar 2026 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.5%
|
160,564
|
$1,636,147 | — | 31 Mar 2026 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.4%
|
157,078
|
$1,600,625 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.4%
|
153,171
|
$1,560,812 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.3%
|
145,575
|
$1,483,408 | — | 31 Mar 2026 | |
| Quinn Opportunity Partners LLC |
13F
|
Company |
1.2%
|
127,112
|
$1,295,271 | — | 31 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
1.1%
|
126,407
|
$1,288,087 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.84%
|
92,595
|
$943,544 | — | 31 Mar 2026 | |
| Jump Financial, LLC |
13F
|
Company |
0.83%
|
90,875
|
$926,016 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.81%
|
88,777
|
$904,637 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.79%
|
87,178
|
$870,908 | — | 31 Mar 2026 | |
| Divisadero Street Capital Management, LP |
13F
|
Company |
0.72%
|
79,839
|
$813,559 | — | 31 Mar 2026 | |
| Virtus Family Office LLC |
13F
|
Company |
0.72%
|
79,060
|
$805,621 | — | 31 Mar 2026 | |
| Empowered Funds, LLC |
13F
|
Company |
0.65%
|
71,584
|
$729,441 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.61%
|
67,040
|
$683,138 | — | 31 Mar 2026 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.58%
|
63,921
|
$651,355 | — | 31 Mar 2026 | |
| Atom Investors LP |
13F
|
Company |
0.55%
|
61,075
|
$622,354 | — | 31 Mar 2026 | |
| Allianz Asset Management GmbH |
13F
|
Company |
0.54%
|
59,859
|
$609,963 | — | 31 Mar 2026 | |
| Quantinno Capital Management LP |
13F
|
Company |
0.51%
|
56,153
|
$572,199 | — | 31 Mar 2026 | |
| SummerHaven Investment Management, LLC |
13F
|
Company |
0.43%
|
47,835
|
$487,439 | — | 31 Mar 2026 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.39%
|
42,552
|
$433,603 | — | 31 Mar 2026 | |
| Engineers Gate Manager LP |
13F
|
Company |
0.36%
|
39,580
|
$403,320 | — | 31 Mar 2026 | |
| COMMONS CAPITAL, LLC |
13F
|
Company |
0.35%
|
38,000
|
$387,220 | — | 31 Mar 2026 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.31%
|
34,302
|
$349,537 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.31%
|
34,291
|
$349,425 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for MEDIFAST INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Scott Schlackman | MED | Common Stock | Purchase | 8.91% | $31,325 | $12.53 | 2,500 | 30,549 | 11 May 2026 | Direct |
| Scott Schlackman | MED | Common Stock | Purchase | 9.79% | $31,625 | $12.65 | 2,500 | 28,049 | 08 May 2026 | Direct |
| Jonathan Barrett MacKenzie | MED | Common Stock | Award | 108.2% | 10,830 | 20,838 | 25 Mar 2026 | Direct | ||
| Jonathan Barrett MacKenzie | MED | Common Stock | Tax liability | -7.93% | -862 | 10,008 | 25 Mar 2026 | Direct | ||
| James P. Maloney | MED | Common Stock | Award | 93.8% | 35,358 | 73,033 | 25 Mar 2026 | Direct | ||
| James P. Maloney | MED | Common Stock | Tax liability | -7.88% | -3,224 | 37,675 | 25 Mar 2026 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Award | 28.5% | 41,795 | 188,233 | 25 Mar 2026 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Tax liability | -12.1% | -20,095 | 146,438 | 25 Mar 2026 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Purchase | $178,725 | $10.11 | 17,678 | 17,678 | 20 Mar 2026 | Dan and Allyson as Joint Tenants | |
| Jonathan Barrett MacKenzie | MED | Common Stock | Tax liability | -0.64% | -70 | 10,870 | 17 Mar 2026 | Direct | ||
| James P. Maloney | MED | Common Stock | Tax liability | -1.16% | -482 | 40,899 | 17 Mar 2026 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Tax liability | -1.56% | -2,638 | 166,533 | 17 Mar 2026 | Direct | ||
| Jonathan Barrett MacKenzie | MED | Common Stock | Tax liability | -1.78% | -198 | 10,940 | 13 Mar 2026 | Direct | ||
| James P. Maloney | MED | Common Stock | Tax liability | -2.17% | -918 | 41,381 | 13 Mar 2026 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Tax liability | -4.01% | -7,075 | 169,171 | 13 Mar 2026 | Direct | ||
| Ming Xian | MED | Restricted Stock Units (cash settled) | Award | 114.8% | 17,181 | 32,143 | 25 Jun 2025 | Direct | ||
| Scott Schlackman | MED | Common Stock | Award | 77.7% | 11,168 | 25,549 | 25 Jun 2025 | Direct | ||
| Andrea B. Thomas | MED | Common Stock | Award | 86.9% | 11,168 | 24,017 | 25 Jun 2025 | Direct | ||
| Michael A. Hoer | MED | Common Stock | Award | 74.6% | 11,168 | 26,139 | 25 Jun 2025 | Direct | ||
| Elizabeth A. Geary | MED | Common Stock | Award | 133.3% | 11,168 | 19,545 | 25 Jun 2025 | Direct | ||
| Jeffrey J. Brown | MED | Common Stock | Award | 114.8% | 20,617 | 38,578 | 25 Jun 2025 | Direct | ||
| Daniel R. Chard | MED | Common Stock | Purchase | 0.26% | $5,003 | $13.13 | 381 | 149,698 | 13 Jun 2025 | The Dan and Allyson Family Irrevocable Trust |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.