Knowles Corporation
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A maker of tiny electronic components, Knowles supplies high-performance capacitors and RF filters for defense and industrial gear, plus the balanced armature speakers and microphones tucked inside hearing aids. Founded in 1946 by acoustical engineer Hugh S. Knowles, the company pioneered the miniature microphone that let hearing aids shrink to nearly invisible devices. It became an independent, publicly traded company in 2014 when Dover Corporation spun it off.
3.25% Convertible Senior Notes due November 1, 2021
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Goldman Sachs Asset Management, L.P. | 13GPassive | 5.1% | 4.31M | Aug 14, 2026 |
| Dimensional Fund Advisors LP | 13G/APassive | 5.9% | 5.02M | Jul 14, 2026 |
| Neuberger Berman Group LLC | 13G/APassive | 3.7% | 3.19M | Jul 7, 2026 |
| Neuberger Berman Investment Advisers LLC | 13G/APassive | 3.7% | 3.15M | Jul 7, 2026 |
| Vanguard Capital Management | 13GPassive | 5.02% | 4.30M | Apr 30, 2026 |
| Vanguard Portfolio Management | 13GPassive | 7.85% | 6.72M | Apr 29, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 27, 2026 |
| Franklin Mutual Advisers, LLC | 13G/APassive | 1.5% | 1.26M | Jan 29, 2026 |
| Ariel Investments, LLC | 13G/APassive | 4.8% | 4.11M | Nov 14, 2025 |
| BlackRock, Inc. | 13G/APassive | 15% | 13.08M | Jul 18, 2025 |