Deerfield Mgmt IV, L.P.
Director10% Owner
Deerfield Mgmt IV, L.P.Director10% Owner
Deerfield Mgmt IV, L.P. insider trades: Larimar Therapeutics (LRMR) stock buys and sales
Director, Larimar Therapeutics Last trade Feb 27, 2026 31 Form 4 filings
$70.9M
Sold, last 12 months
2 sales
$25.0M
Bought, last 12 months
4 buys
48
Open-market trades
since 2018
16
Companies
last trade 2026
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Deerfield Mgmt IV, L.P. reports to the SEC
LRMRLarimar Therapeutics
Director · last filing Mar 2, 2026
+$133.5M
NUVLNuvalent
Director · last filing Jul 17, 2026
-$266.4M
+$21.8M
SPRYARS Pharmaceuticals
10% Owner · last filing Jul 1, 2025
-$23.8M
AHCOAdaptHealth
10% Owner · last filing Mar 12, 2024
-$3.8M
MIRMMirum Pharmaceuticals
10% Owner · last filing Jun 8, 2022
-$3.6M
+$5.0M
DFPHOncology Institute
10% Owner · last filing Nov 16, 2021
No market trades
and 10 more companies
Open-market buys and sales
48 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 27, 2026 | LRMR | ↑ Buy | 2,000,000 | $5.00 | $10.0M | Through Deerfield Partners, L.P. | Mar 2, 2026 (3d) |
| Feb 27, 2026 | LRMR | ↑ Buy | 1,084,012 | $5.00 | $5.4M | Through Deerfield Private Design Fund IV | Mar 2, 2026 (3d) |
| Feb 27, 2026 | LRMR | ↑ Buy | 1,084,010 | $5.00 | $5.4M | Through Deerfield Private Design Fund II | Mar 2, 2026 (3d) |
| Feb 27, 2026 | LRMR | ↑ Buy | 831,978 | $5.00 | $4.2M | Through Deerfield Healthcare Innovations | Mar 2, 2026 (3d) |
| Nov 24, 2025 | NUVL | ↓ Sell | 371,287 | $95.44 | $35.4M | Through Deerfield Healthcare Innovations | Nov 24, 2025 (0d) |
| Nov 24, 2025 | NUVL | ↓ Sell | 371,287 | $95.44 | $35.4M | Through Deerfield Private Design Fund IV | Nov 24, 2025 (0d) |
| Jul 31, 2025 | LRMR | ↑ Buy | 3,387,539 | $3.20 | $10.8M | Through Deerfield Private Design Fund IV | Aug 4, 2025 (4d) |
| Jul 31, 2025 | LRMR | ↑ Buy | 3,387,529 | $3.20 | $10.8M | Through Deerfield Private Design Fund II | Aug 4, 2025 (4d) |
| Jul 31, 2025 | LRMR | ↑ Buy | 2,599,932 | $3.20 | $8.3M | Through Deerfield Healthcare Innovations | Aug 4, 2025 (4d) |
| Jun 27, 2025 | SPRY | ↓ Sell | 370,075 | $18.46 | $6.8M | Through Deerfield Private Design Fund II | Jul 1, 2025 (4d) |
| Jun 27, 2025 | SPRY | ↓ Sell | 370,074 | $18.46 | $6.8M | Through Deerfield Private Design Fund IV | Jul 1, 2025 (4d) |
| Nov 12, 2024 | SPRY | ↓ Sell | 281,635 | $18.01 | $5.1M | Through Deerfield Private Design Fund II | Nov 13, 2024 (1d) |
| Nov 12, 2024 | SPRY | ↓ Sell | 281,635 | $18.01 | $5.1M | Through Deerfield Private Design Fund IV | Nov 13, 2024 (1d) |
| Oct 22, 2024 | NUVL | ↓ Sell | 1,000,000 | $97.75 | $97.8M | Through Deerfield Private Design Fund IV | Oct 24, 2024 (2d) |
| Oct 22, 2024 | NUVL | ↓ Sell | 1,000,000 | $97.75 | $97.8M | Through Deerfield Healthcare Innovations | Oct 24, 2024 (2d) |
| Mar 12, 2024 | AHCO | ↓ Sell | 350,000 | $10.90 | $3.8M | Through Deerfield Partners, L.P. | Mar 12, 2024 (0d) |
| Feb 16, 2024 | LRMR | ↑ Buy | 1,430,206 | $8.74 | $12.5M | Through Deerfield Private Design Fund II | Feb 16, 2024 (0d) |
| Feb 16, 2024 | LRMR | ↑ Buy | 1,430,206 | $8.74 | $12.5M | Through Deerfield Private Design Fund IV | Feb 16, 2024 (0d) |
| Feb 16, 2024 | LRMR | ↑ Buy | 1,430,205 | $8.74 | $12.5M | Through Deerfield Partners, L.P. | Feb 16, 2024 (0d) |
| Nov 3, 2022 | NUVL | ↑ Buy | 650,000 | $33.50 | $21.8M | Through Deerfield Partners, L.P. | Nov 7, 2022 (4d) |
| Sep 16, 2022 | LRMR | ↑ Buy | 2,777,777 | $3.15 | $8.7M | Through Deerfield Private Design Fund II | Sep 20, 2022 (4d) |
| Sep 16, 2022 | LRMR | ↑ Buy | 2,777,777 | $3.15 | $8.7M | Through Deerfield Healthcare Innovations | Sep 20, 2022 (4d) |
| Sep 16, 2022 | LRMR | ↑ Buy | 2,777,777 | $3.15 | $8.7M | Through Deerfield Partners, L.P. | Sep 20, 2022 (4d) |
| Sep 16, 2022 | LRMR | ↑ Buy | 2,777,777 | $3.15 | $8.7M | Through Deerfield Private Design Fund IV | Sep 20, 2022 (4d) |
| Jun 6, 2022 | MIRM | ↓ Sell | 20,212 | $25.01 | $505K | Through Deerfield Private Design Fund IV | Jun 8, 2022 (2d) |
| Jun 6, 2022 | MIRM | ↓ Sell | 18,266 | $25.01 | $457K | Through Deerfield Healthcare Innovations | Jun 8, 2022 (2d) |
| Jul 9, 2021 | MIRM | ↓ Sell | 99,325 | $15.81 | $1.6M | Through Deerfield Special Situations Fun | Jul 13, 2021 (4d) |
| Jul 7, 2021 | MIRM | ↓ Sell | 66,675 | $16.29 | $1.1M | Through Deerfield Special Situations Fun | Jul 7, 2021 (0d) |
| Jun 30, 2021 | LRMR | ↑ Buy | 228,571 | $8.75 | $2.0M | Through Deerfield Private Design Fund IV | Jul 2, 2021 (2d) |
| Jun 30, 2021 | LRMR | ↑ Buy | 228,570 | $8.75 | $2.0M | Through Deerfield Healthcare Innovations | Jul 2, 2021 (2d) |
| Jun 30, 2021 | LRMR | ↑ Buy | 228,569 | $8.75 | $2.0M | Through Deerfield Private Design Fund II | Jul 2, 2021 (2d) |
| Jun 1, 2021 | OMIC | ↑ Buy | 1,050,000 | $22.00 | $23.1M | Through Deerfield Partners, L.P. | Jun 3, 2021 (2d) |
| Jun 1, 2021 | OMIC | ↑ Buy | 450,000 | $22.00 | $9.9M | Through Deerfield Private Design Fund IV | Jun 3, 2021 (2d) |
| Mar 30, 2021 | EWTX | ↑ Buy | 625,000 | $16.00 | $10.0M | Through Deerfield Private Design Fund IV | Mar 30, 2021 (0d) |
| Jul 28, 2020 | ANNX | ↑ Buy | 350,000 | $17.00 | $6.0M | Through Deerfield Partners, L.P. | Jul 28, 2020 (0d) |
| Jul 28, 2020 | ANNX | ↑ Buy | 350,000 | $17.00 | $6.0M | Through Deerfield Private Design Fund IV | Jul 28, 2020 (0d) |
| Jul 14, 2020 | NKTX | ↑ Buy | 500,000 | $18.00 | $9.0M | Through Deerfield Private Design Fund IV | Jul 14, 2020 (0d) |
| Jul 14, 2020 | NKTX | ↑ Buy | 500,000 | $18.00 | $9.0M | Through Deerfield Partners, L.P. | Jul 14, 2020 (0d) |
| Feb 18, 2020 | RVMD | ↑ Buy | 300,000 | $17.00 | $5.1M | Through Deerfield Partners, L.P. | Feb 18, 2020 (0d) |
| Feb 18, 2020 | RVMD | ↑ Buy | 300,000 | $17.00 | $5.1M | Through Deerfield Private Design Fund IV | Feb 18, 2020 (0d) |
| Feb 10, 2020 | SDGR | ↑ Buy | 250,000 | $17.00 | $4.3M | Through Deerfield Partners, L.P. | Feb 10, 2020 (0d) |
| Oct 29, 2019 | CABA | ↑ Buy | 700,000 | $11.00 | $7.7M | Through Deerfield Partners, L.P. | Oct 30, 2019 (1d) |
| Oct 7, 2019 | FREQ | ↑ Buy | 285,714 | $14.00 | $4.0M | Through Deerfield Partners, L.P. | Oct 7, 2019 (0d) |
| Jul 22, 2019 | MIRM | ↑ Buy | 166,000 | $15.00 | $2.5M | Through Deerfield Special Situations Fun | Jul 24, 2019 (2d) |
| Jul 22, 2019 | MIRM | ↑ Buy | 166,000 | $15.00 | $2.5M | Through Deerfield Private Design Fund IV | Jul 24, 2019 (2d) |
| Oct 1, 2018 | ARVN | ↑ Buy | 104,167 | $16.00 | $1.7M | Through Deerfield Special Situations Fun | Oct 1, 2018 (0d) |
| Oct 1, 2018 | ARVN | ↑ Buy | 104,167 | $16.00 | $1.7M | Through Deerfield Private Design Fund II | Oct 1, 2018 (0d) |
| Oct 1, 2018 | ARVN | ↑ Buy | 104,166 | $16.00 | $1.7M | Through Deerfield Private Design Fund IV | Oct 1, 2018 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other LRMR insiders
Open-market trades in the last 12 months
Thomas Edward Hamilton
Insider
2 buys
Jul 6, 2026
Deerfield Mgmt L.P.
Director
1 buy
Feb 27, 2026
Jeffrey W Sherman
Insider
1 buy
Feb 27, 2026
Frank E Thomas
Insider
1 buy
Feb 27, 2026
Deerfield Partners, L.P.
Director
1 buy
Feb 27, 2026
James E Flynn
Director
1 buy
Feb 27, 2026
Deerfield Management Company, L.P.
Director
1 buy
Feb 27, 2026
Deerfield Mgmt III, L.P.
Director
1 buy
Feb 27, 2026
About Deerfield Mgmt IV, L.P.'s insider trades
Deerfield Mgmt IV, L.P. is a director at Larimar Therapeutics (LRMR). Since Oct 1, 2018, it has reported 35 open-market purchases worth $264.3M and 13 sales worth $297.6M on SEC Form 4. In the last 12 months: 4 buys ($25.0M) and 2 sales ($70.9M).
Its filings also include conversions (12 filings), other transactions (7 filings), shares returned to the company (1 filing), grants and awards (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every LRMR insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.