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BBLG · NASDAQ · Biotechnology

Bone Biologics (BBLG)

Develops an investigational NELL-1 bone-graft candidate for lumbar spinal fusion.

$0.5600

Pre-market−0.01 (−2.27%)

At close$0.5730(+1.70%)

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Breakdown13F · 13D/G · Form 4

	Institutions3 holders · as of Mar 31, 2026	0.16%	4.4K shares
	Otherremainder	99.84%	2.75M shares

2.76M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Two share counts disagree (2.76M in the company's Sep 3, 2026 report, 1.81M elsewhere); stakes use the report.

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Tower Research Capital LLC (TRC)Institution	0.15%	4,126	13Fas of Mar 31, 2026
Sbi Securities Co., Ltd.Institution	0.01%	230	13Fas of Mar 31, 2026
UBS Group AGInstitution	0.00%	56	13Fas of Mar 31, 2026
Ionic Ventures, LLCStrategic	—9.99% of class, as filed	—	13G/Afiled Dec 20, 2023 ↗
Lind Global Partners II LLCStrategic	—6.50% of class, as filed	—	13Gfiled Jun 26, 2023 ↗
Mitchell P. KopinInsider	—9.99% of class, as filed	—	13Gfiled Nov 7, 2025 ↗
Orthofix International N.V.Insider	—6.00% of class, as filed	—	13G/Afiled Apr 3, 2018 ↗
Walleye Capital LLCInstitution	—5.43% of class, as filed	—	13D/Gfiled Feb 14, 2023 ↗
Bret Hankey¹Insiderdirector	0.04%	976	Form 4filed Jan 17, 2020 ↗
Jeff Frelick²Insiderofficer: Chief Executive Officer	0.01%	358	Form 4filed Sep 12, 2023 ↗
Deina H. Walsh³Insiderofficer: Chief Financial Officer	0.01%	313	Form 4filed Sep 14, 2023 ↗
Amir F. Heshmatpour⁴Insider10 percent owner	0.00%	10	Form 4filed Dec 5, 2017 ↗
Robert E. Gagnon⁵Insiderdirector	0.00%	0	Form 4filed Jan 10, 2024 ↗
Don Hankey⁶Insiderdirector, 10 percent owner, officer: Chairman of the Board	0.00%	0	Form 4filed Mar 29, 2023 ↗

Last filed Jan 17, 2020; leaving the company requires no filing. Not in the bar.
Last filed Sep 12, 2023; leaving the company requires no filing. Not in the bar.
Last filed Sep 14, 2023; leaving the company requires no filing. Not in the bar.
Last filed Dec 5, 2017; leaving the company requires no filing. Not in the bar.
Last filed Jan 10, 2024; leaving the company requires no filing. Not in the bar.
Last filed Mar 29, 2023; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

3 holders · 4.4K shares · 0 new positions · 1 increased · 1 reduced · 4 closed

Holder	Shares	% outstanding	Chg q/q	Filed
Tower Research Capital LLC (TRC)	4.1K	0.15%	+747	May 15, 2026
Sbi Securities Co., Ltd.	230	0.01%	0	Apr 28, 2026
UBS Group AG	56	0.00%	−1.9K	May 5, 2026

Ownership statements13D/G · 5% or more, as filed

Holder	% of class	Shares	Form	Filed
Mitchell P. Kopin	9.99%	199.3K	13G	Nov 7, 2025 ↗

Bone Biologics (BBLG)

Breakdown13F · 13D/G · Form 4

Top shareholders13F · 13D/G · Form 4

Institutions13F, as of Mar 31, 2026

Ownership statements13D/G · 5% or more, as filed

Insider tradesForm 4

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