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Livermore
Livermore
ZHEN

Madryn Asset Management, LP

SEC CIK
0001787423
Latest filing
Aug 18, 2026

The latest 13F from Madryn Asset Management, LP covers Q2 2026 (filed Aug 18, 2026): 2 long positions worth $36.9M. The top 10 holdings make up 100.0% of the portfolio, and the largest is Neuronetics, Inc. (STIM) at 65.3%. Livermore has 13 filings on Form 13F from this institution, going back to Q4 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
0
Added
1
Est. +$84.0K
Reduced
0
Sold out
0

Top 5 holdings

Share of this quarter's portfolio value

  1. STIMNeuronetics, Inc.
    65.3%$24.1MHistory
  2. OMDAOmada Health, Inc.
    34.7%$12.8MHistory

Share of portfolio

Each position's share of portfolio value

  1. STIM65.3%
  2. OMDA34.7%

Biggest buys

New and added positions, by estimated amount bought

  1. STIMNeuronetics, Inc.
    +$84.0KAddedHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

None this quarter.

Biggest sells

Reduced and sold-out positions, by estimated amount sold

None this quarter.

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

None this quarter.

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$36.9M
+$2.79M (+8.2%) vs. prior quarter
Positions
2
0 vs. prior quarter
Top 10 concentration
100.0%
Top 10 as share of value
Turnover
0.0%
Q2 2026, one quarter
Average holding period
3.0 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2021), so positions held before then are understated.

13F filings by quarter

11 quarters, going back to Q4 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $150.1M (Q4 2021)

Q4 2021: $150.1MQ1 2022: $115.2MQ2 2022: $76.1MQ3 2022: $63.2MQ4 2022: $68.0MQ1 2023: $75.7MQ2 2023: $44.2MQ3 2023: $36.1MQ4 2025: $34.7MQ1 2026: $34.1MQ2 2026: $36.9M
Q4 2021Q2 2026
13F filings of Madryn Asset Management, LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 18, 20262$36.9MSTIMOMDAvs. Q1 2026SEC
Q1 2026May 15, 20262$34.1MSTIMOMDAvs. Q4 2025SEC
Q4 2025Feb 10, 20263$34.7MSTIMOMDAVERO–SEC
Q3 2023Nov 2, 20235$36.1MSLGCESTAGreenbrook TMS Inc.vs. Q2 2023SEC
Q2 2023Aug 14, 20235$44.2MESTASLGCGreenbrook TMS Inc.vs. Q1 2023SEC
Q1 2023May 12, 2023Amended5$75.7MESTASLGCGreenbrook TMS Inc.vs. Q4 2022SEC
Q4 2022Mar 7, 20234$68.0MESTASLGCSomalogic Incvs. Q3 2022SEC
Q3 2022Nov 14, 20224$63.2MESTASLGCSomalogic Incvs. Q2 2022SEC
Q2 2022Aug 12, 20224$76.1MESTASLGCSomalogic Incvs. Q1 2022SEC
Q1 2022May 27, 2022Amended4$115.2MSLGCESTASomalogic Incvs. Q4 2021SEC
Q4 2021Mar 15, 20224$150.1MSLGCESTASomalogic Inc–SEC

13D and 13G filings

Companies where Madryn Asset Management, LP reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

2 companies, largest stake first.

Companies where Madryn Asset Management, LP owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
VEROVenus Concept Inc.13D/A100.00%57.0M shares+9.00 ppfrom 91.00%Oct 12, 202314 filingsMar 30, 2026SEC
STIMNeuronetics, Inc.13D/A30.30%20.7M shares−1.10 ppfrom 31.40%Dec 17, 20243 filingsMar 4, 2026SEC

Latest filings

32 filings on file made by Madryn Asset Management, LP or listing it as a reporting person; the latest 20 are shown.

Schedule 13D and 13G filings by Madryn Asset Management, LP
CompanyFiled (ET)FormStakeChangeEvent dateFiling
VEROVenus Concept Inc.Mar 30, 20269:20 PM ET13D/A100.00%57.0M shares+9.00 ppfrom 91.00%Mar 26, 2026SEC
VEROVenus Concept Inc.Mar 17, 20268:54 PM ET13D/A91.00%18.8M shares0.00 ppfrom 91.00%Mar 13, 2026SEC
STIMNeuronetics, Inc.Mar 4, 20265:33 PM ET13D/A30.30%20.7M shares−1.10 ppfrom 31.40%Mar 2, 2026SEC
VEROVenus Concept Inc.Jan 15, 20264:30 PM ET13D/A91.00%18.8M shares0.00 ppfrom 91.00%Jan 13, 2026SEC
VEROVenus Concept Inc.Dec 15, 20254:15 PM ET13D/A91.00%18.8M shares+5.60 ppfrom 85.40%Dec 11, 2025SEC
VEROVenus Concept Inc.Oct 2, 20257:24 PM ET13D/A85.40%10.8M shares−0.10 ppfrom 85.50%Sep 30, 2025SEC
STIMNeuronetics, Inc.Aug 12, 20254:15 PM ET13D/A31.40%20.7M shares–Aug 8, 2025SEC
VEROVenus Concept Inc.Jul 2, 20257:39 PM ET13D/A85.50%10.9M shares0.00 ppfrom 85.50%Jun 30, 2025SEC
VEROVenus Concept Inc.Jun 27, 20254:18 PM ET13D/A85.50%10.9M shares+76.90 ppfrom 8.60%Jun 25, 2025SEC
VEROVenus Concept Inc.Jun 11, 20255:43 PM ET13D/A8.60%174.7K shares−11.40 ppfrom 20.00%Jun 9, 2025SEC
VEROVenus Concept Inc.Apr 2, 20255:51 PM ET13D/A20.00%174.7K shares–Mar 31, 2025SEC
STIMNeuronetics, Inc.Dec 17, 202413DOld format–New–SEC
VEROVenus Concept Inc.Sep 30, 202413D/AOld format–––SEC
Greenbrook TMS Inc.Jun 27, 202413D/AOld format–––SEC
Greenbrook TMS Inc.Jun 13, 202413D/AOld format–––SEC
Greenbrook TMS Inc.Jun 4, 202413D/AOld format–––SEC
VEROVenus Concept Inc.May 29, 202413D/AOld format–––SEC
Greenbrook TMS Inc.May 28, 202413D/AOld format–––SEC
Greenbrook TMS Inc.May 22, 202413D/AOld format–––SEC
Greenbrook TMS Inc.May 16, 202413D/AOld format–––SEC