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STEELHEAD PARTNERS LLC — 13F Holdings & Portfolio

CIK 1133521 · latest 13F-HR filed 2026-08-14

Backtest portfolio

STEELHEAD PARTNERS LLC manages $1.40B in 13F-reported U.S. long-equity assets across 25 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are UBER (10.26%), BBIO (8.90%), AKAM (8.57%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 8 new positions and exited 7; 10 existing positions rose in reported value and 1 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Loading holdings…
AUM
$1.40B

Long-equity book

Holdings
25

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+8 / −7 / ↑10 / ↓1

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
UBER10.3% · +20%BBIO8.9% · 0%AKAM8.6% · -14%ALRM6.1% · 0%LCII5.6% · +2%ALNY5.6% · +8%DXCM5.5% · 0%NTNX5.2% · 0%NET4.6% · -29%VRNS4.1% · +48%WK4.1% · +6%ON3.5% · -59%BILL3.1% · +49%DDOG3.0% · newIRTC3.0% · +6%POST2.8% · +30%HALO2.8% · +84%DASH2.5% · newSNOW2.4% · newPENG2.0% · -56%BL1.8% · 0%DOCN1.6% · newAEIS1.5% · newTVTX1.3% · newNEO0.1% · new

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 64.5%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 31, 2026.

Assets Under Management
$2.51B
Discretionary
$2.51B
Employees
12
Accounts
7
Address
800 FIFTH AVENUE
SUITE 3700
SEATTLE, WA 98104
Phone
(206) 307-0910
Website
Name Title / Status Ownership Type
BINGE, BRENT, EUGENE ControlGENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER
since Jul 2010
Less than 5%Individual
HIRATA, AIMEE, WOOD ControlCHIEF CLIENT STRATEGIST
since Sep 2024
Less than 5%Individual
HULSE, GRANT, WILLIAM ControlCHIEF FINANCIAL OFFICER/CHIEF OPERATING OFFICER
since Jun 2010
Less than 5%Individual
JOHNSTON, JAMES, MICHAEL ControlMEMBER
since Oct 1996
25–50%Individual
MCFARLAND, NICHOLAS, R ControlMEMBER/CO-PORTFOLIO MANAGER
since Apr 2020
10–25%Individual
SCHAEFER, SCOTT, BRADLEY ControlMANAGING MEMBER
since Mar 2019
Less than 5%Individual
THE SCHAEFER FAMILY TRUST ControlMEMBER
since May 2019
25–50%Domestic Entity
KLEIN, BRIAN, KATZMEMBER
since Oct 1996
Less than 5%Individual
SCHAEFER, SCOTT, BRADLEY Control
Indirect owner via THE SCHAEFER FAMILY TRUST
TRUSTEE
since Apr 2014
General partner, trustee or managerIndividual
Schaefer, Melissa, Katherine
Indirect owner via THE SCHAEFER FAMILY TRUST
TRUSTEE
since Apr 2014
General partner, trustee or managerIndividual
Ownership & leadership changes · 10 filings with changes since Mar 26, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Mar 31, 2026 filing
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 50–75% → 25–50%
Mar 18, 2025 filing
  • No longer listedSTEVENSON, GREG, MARTIN · PRESIDENT · Less than 5% · control person · listed since Jun 2010
  • AddedHIRATA, AIMEE, WOOD · CHIEF CLIENT STRATEGIST · Less than 5% · control person
  • ChangedMCFARLAND, NICHOLAS, R · ownership 25–50% → 10–25%
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 25–50% → 50–75%
Mar 13, 2024 filing
  • ChangedJOHNSTON, JAMES, MICHAEL · ownership 75% or more → 25–50%
  • ChangedMCFARLAND, NICHOLAS, R · ownership Less than 5% → 25–50%
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 10–25% → 25–50%
Mar 21, 2023 filing
  • ChangedJOHNSTON, JAMES, MICHAEL · ownership 25–50% → 75% or more
  • ChangedMCFARLAND, NICHOLAS, R · ownership 10–25% → Less than 5%
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 25–50% → 10–25%
Mar 22, 2021 filing
  • ChangedJOHNSTON, JAMES, MICHAEL · ownership 50–75% → 25–50%
  • ChangedMCFARLAND, NICHOLAS, R · ownership 5–10% → 10–25%
Apr 15, 2020 filing
  • AddedMCFARLAND, NICHOLAS, R · MEMBER/CO-PORTFOLIO MANAGER · 5–10% · control person
  • AddedSCHAEFER, SCOTT, BRADLEY · TRUSTEE · General partner, trustee or manager · indirect via THE SCHAEFER FAMILY TRUST · control person
  • AddedSchaefer, Melissa, Katherine · TRUSTEE · General partner, trustee or manager · indirect via THE SCHAEFER FAMILY TRUST
  • ChangedJOHNSTON, JAMES, MICHAEL · ownership 75% or more → 50–75%
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 10–25% → 25–50%
Mar 27, 2020 filing
  • ChangedJOHNSTON, JAMES, MICHAEL · ownership 50–75% → 75% or more
  • ChangedKLEIN, BRIAN, KATZ · ownership 5–10% → Less than 5%
  • ChangedTHE SCHAEFER FAMILY TRUST · ownership 25–50% → 10–25%
May 23, 2019 filing
  • AddedTHE SCHAEFER FAMILY TRUST · MEMBER · 25–50% · control person
  • ChangedSCHAEFER, SCOTT, BRADLEY · ownership 25–50% → Less than 5%
Mar 26, 2019 filing
  • AddedSCHAEFER, SCOTT, BRADLEY · MANAGING MEMBER · 25–50% · control person
  • ChangedJOHNSTON, JAMES, MICHAEL · title MEMBER-MANAGER → MEMBER; ownership 75% or more → 50–75%
  • ChangedKLEIN, BRIAN, KATZ · title MEMBER-MANAGER → MEMBER; ownership 10–25% → 5–10%; no longer a control person
Mar 12, 2015 filing
  • ChangedHULSE, GRANT, WILLIAM · title DIRECTOR OF FINANCE AND OPERATIONS → CHIEF FINANCIAL OFFICER/CHIEF OPERATING OFFICER
Older changes (1 more filing)
Mar 26, 2012 filing (earliest on record)
  • ListedBINGE, BRENT, EUGENE · GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER · Less than 5% · control person
  • ListedHULSE, GRANT, WILLIAM · DIRECTOR OF FINANCE AND OPERATIONS · Less than 5% · control person
  • ListedJOHNSTON, JAMES, MICHAEL · MEMBER-MANAGER · 75% or more · control person
  • ListedKLEIN, BRIAN, KATZ · MEMBER-MANAGER · 10–25% · control person
  • ListedSTEVENSON, GREG, MARTIN · PRESIDENT · Less than 5% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

STEELHEAD PARTNERS LLC Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 Uber Technologies Inc UBER 90353TAM2 $143.9M 10.26% 120,000,000 PRN
2 Bridgebio Pharma Inc BBIO 10806XAB8 $124.8M 8.90% 70,000,000 PRN
3 Akamai Technologies Inc AKAM 00971TAL5 $120.2M 8.57% 100,000,000 PRN
4 Alarm Com Hldgs Inc ALRM 011642AD7 $85.5M 6.10% 90,000,000 PRN
5 LCI Inds LCII 501812AD3 $79.1M 5.64% 70,500,000 PRN
6 Alnylam Pharmaceuticals Inc ALNY 02043QAB3 $78.2M 5.57% 65,000,000 PRN
7 Dexcom Inc DXCM 252131AM9 $77.5M 5.53% 82,850,000 PRN
8 Nutanix Inc NTNX 67059NAH1 $73.5M 5.24% 65,000,000 PRN
9 Cloudflare Inc NET 18915MAC1 $64.4M 4.60% 50,000,000 PRN
10 Varonis Sys Inc VRNS 922280AD4 $57.6M 4.10% 59,140,000 PRN
11 Workiva Inc WK 98139AAD7 $57.3M 4.09% 61,000,000 PRN
12 ON Semiconductor Corp ON 682189AU9 $48.6M 3.46% 40,226,000 PRN
13 Bill Holdings Inc BILL 090043AF7 $43.3M 3.09% 50,000,000 PRN
14 Datadog Inc DDOG 23804LAD5 $42.6M 3.04% 30,000,000 PRN
15 Irhythm Holdings Inc IRTC 450056AB2 $42.1M 3.00% 38,122,000 PRN
16 Post Hldgs Inc POST 737446AT1 $39.5M 2.81% 38,014,000 PRN
17 Halozyme Therapeutics Inc HALO 40637HAD1 $39.1M 2.79% 35,000,000 PRN
18 Doordash Inc DASH 25809KAB1 $34.4M 2.45% 35,000,000 PRN
19 Snowflake Inc SNOW 833445AB5 $33.3M 2.37% 20,000,000 PRN
20 Penguin Solutions Inc PENG 83205YAE4 $28.4M 2.02% 10,000,000 PRN
21 Blackline Inc BL 09239BAF6 $25.8M 1.84% 28,000,000 PRN
22 Digitalocean Hldgs Inc DOCN 25402DAB8 $23.1M 1.65% 20,427,000 PRN
23 Advanced Energy Inds AEIS 007973100 $20.6M 1.47% 55,174 SH
24 Travere Therapeutics Inc TVTX 89422GAB3 $17.7M 1.26% 15,000,000 PRN
25 NeoGenomics Inc NEO 64049M209 $1.9M 0.13% 129,200 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $1.40B 25 0001133521-26-000013
2026-03-31 2026-05-13 $1.39B 24 0001133521-26-000011
2025-12-31 2026-02-13 $1.35B 24 0001133521-26-000006
2025-09-30 2025-11-14 $1.67B 30 0001133521-25-000013
Filer Information
Address
800 FIFTH AVENUE
SUITE 3700
SEATTLE, WA 98104
Phone
(206) 307-0910
Filing Manager
STEELHEAD PARTNERS LLC
SEATTLE, WA
Signatory
Brent E. Binge
General Counsel and Chief Compliance Officer