Medifast Inc
MED- Exchange
- NYSE
- Industry
- Miscellaneous Food Preparations & Kindred Products
- SEC CIK
- 0000910329
In the last 90 days, Medifast Inc insiders filed 3 open-market purchases and 0 sales; 112 institutions reported holding it in 13F filings for Q2 2026, worth $87.7M in total; no superinvestor holds it.
Holders of 5% or more of MED
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Medifast Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | 13G/A | 8.09%888.9K shares | −1.11 ppfrom 9.20% | Nov 13, 20242 filings | May 14, 2025 | SEC |
| Susquehanna Securities, LLC | 13G/A | 6.00%654.9K shares | −1.20 ppfrom 7.20% | Aug 14, 20252 filings | Nov 13, 2025 | SEC |
| Charles Schwab Investment Management Inc | 13G | 5.41%595.2K shares | New | Nov 13, 20251 filing | Nov 13, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
5 Schedule 13D and 13G filings on Medifast Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 20255:44 PM ET | Susquehanna Securities, LLCand 2 others | 13G/A | 6.00%654.9K shares | −1.20 ppfrom 7.20% | Sep 30, 2025 | SEC |
| Nov 13, 20251:37 PM ET | Charles Schwab Investment Management Inc | 13G | 5.41%595.2K shares | New | Sep 30, 2025 | SEC |
| Aug 14, 202510:30 AM ET | Susquehanna Securities, LLCand 2 others | 13G | 7.20%785.6K shares | New | Jun 30, 2025 | SEC |
| May 14, 20253:28 PM ET | Renaissance Technologies LLCand 1 other | 13G/A | 8.09%888.9K shares | −1.11 ppfrom 9.20% | Jan 2, 2025 | SEC |
| Nov 13, 20243:48 PM ET | Renaissance Technologies LLCand 1 other | 13G/A | 9.20%1.01M shares | – | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Medifast Inc shares.
No Form 144 notices for Medifast Inc are on file.