Osterweis Capital Management Inc
- Regulatory AUM
- $439M
- Discretionary
- $439M
- Clients
- 34
- Avg AUM / client
- $12.9M
- Accounts
- 35
- Employees
- 66
AUM over time
Annual snapshots from Form ADV filings · as of Mar 31, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| High net worth individuals | 33 | $276M | 62.8% |
| Investment companies | 1 | $148M | 33.8% |
| State or municipal government entities | Fewer than 5 clients | $15.1M | 3.43% |
People (14)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Angove, Martha, Elizabeth | Trustee, Carl Kaufman & Martha Angove Revocable Trust | Jan 2004 (23y) | Less than 5% | |
| Hermanski, Gregory, Scott | Trustee, Hermanski Family Trust | Jan 2004 (23y) | Less than 5% | |
| Hermanski, Rebecca, Dawn | Trustee, Hermanski Family Trust | Jan 2004 (23y) | Less than 5% | |
| Kaufman, Carl, Philip | Trustee, Carl Kaufman & Martha Angove Revocable Trust | Jan 2004 (23y) | Less than 5% | |
| Tavernetti, John, Foxon | Chief Compliance Officer | Jan 2005 (22y) | Less than 5% | |
| Osterweis, John, Steven | Chairman | May 2016 (10y) | Less than 5% | |
| Chang, Sarah | Trustee, Eubanks/Chang Family Trust | Jan 2017 (10y) | Less than 5% | |
| Eubanks, Shawn, Michael | Trustee, Eubanks/Chang Family Trust | Jan 2017 (10y) | Less than 5% | |
| Halberstadt, Catherine | Co Ceo And Co President | Apr 2017 (9y) | Less than 5% | |
| Kane, Bradley, Morgan | Trustee, Kane Family Trust Dtd 6/27/2005 | Jan 2018 (9y) | Less than 5% | |
| Kane, Rachel, Zenner | Trustee, Kane Family Trust Dtd 6/27/2005 | Jan 2018 (9y) | Less than 5% | |
| Coleman, John, Scott | Director | Apr 2022 (4y) | Less than 5% | |
| Maclellan, John, Stephen | Director | Apr 2022 (4y) | Less than 5% | |
| Manchuck, Craig, Leonard | Shareholder | May 2022 (4y) | 5% – 10% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Osterweis Revocable Trust, U/A/Dated 09/13/1993 | Shareholder | Jan 1994 | A | 10% – 25% |
| Carl Kaufman & Martha Angove Revocable Trust | Shareholder | Jan 2004 | A | 10% – 25% |
| Ocm Stock Holdings, Llc | Shareholder | Jan 2017 | A | 10% – 25% |
| Hermanski Family Trust | Shareholder | Jan 2004 | A | 5% – 10% |
| Eubanks/Chang Family Trust | Shareholder | Jan 2017 | A | 5% – 10% |
| Kane Family Trust Dtd 6/27/2005 | Shareholder | Jan 2018 | A | 5% – 10% |
Undisclosed: 0% – 50% of the firm is not attributable from the filed Schedule A bands.
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/31/2026 | 1.02 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Fixed fees
Services
- • Financial planning services
- • Portfolio management for individuals/small businesses
- • Portfolio management for investment companies
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Citibank $201M (46% of AUM) Mar 2026
- Charles Schwab & Co. $72.7M (17% of AUM) Mar 2026
- Wells Fargo $61.6M (14% of AUM) Apr 2025
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports it does not have custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 31, 2026.
View current Form ADV (SEC/IAPD) ↗