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TSVT

2seventy bio, Inc.

Total Trades

52

Buys

4

Sells

46

Largest Trade

N/A

Insiders

10

Institutional Funds

2

Inst. Value

$15K–$50K

Activist Filings

26

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Gregory Philip D	Chief Scientific O…	SELL	$15K–$50K	1K	$23.91	Jan 11, 2022
Leschly Nick	President and CEO	SELL	$50K–$100K	3K	$23.91	Jan 11, 2022

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Institutional Ownership

13F filings as of Jun 30, 2025 · 2 funds holding

Fund	Shares	Value	Type
OSAIC HOLDINGS, INC.	3K	$15K–$50K	SH
IFP Advisors, Inc	0	<$1K	SH

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Glazer Capital, LLC

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Beryl Capital Management LLC

SC 13G/A · Aug 14, 2025

0.0%

0 shares

THE GOLDMAN SACHS GROUP, INC.

SC 13G/A · Aug 13, 2025

0.0%

308 shares

SC 13G/A · Jun 6, 2025

0.0%

0 shares

The Vanguard Group

SC 13G/A · Apr 30, 2025

5.4%

2.8M shares

Glazer Capital, LLC

SC 13G · Apr 15, 2025

5.3%

2.8M shares

Beryl Capital Management LLC

SC 13G · Mar 18, 2025

8.1%

4.3M shares

Kynam Capital Management, LP

SC 13G/A · Mar 17, 2025

0.0%

0 shares

Morgan Stanley I.R.S. # 36-3145972

SC 13G/A · Nov 6, 2024

5.5%

2.8M shares

Citadel Advisors LLC

SC 13G/A · Feb 14, 2024

0.0%

6 shares

Baker Bros. Advisors LP

SC 13G/A · Feb 14, 2024

5.0%

2.5M shares

Morgan Stanley I.R.S. # 36-3145972

SC 13G · Feb 12, 2024

9.4%

4.7M shares

Millennium Management LLC

SC 13G/A · Feb 1, 2024

4.7%

2.4M shares

BlackRock, Inc.

SC 13G/A · Jan 26, 2024

7.7%

3.9M shares

STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON 04-2456637

SC 13G/A · Jan 23, 2024

1.9%

0 shares

Wellington Management Group LLP

SC 13G/A · Nov 9, 2023

1.6%

803K shares

STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON 04-2456637

SC 13G/A · Oct 10, 2023

2.1%

0 shares

Kynam Global Healthcare Master Fund, LP

SC 13G · Sep 6, 2023

10.1%

5.1M shares

Millennium Management LLC

SC 13G · May 15, 2023

5.0%

2.5M shares

Citadel Advisors LLC

SC 13G · May 1, 2023

4.1%

6 shares

Baker Bros. Advisors LP

SC 13G · Feb 14, 2023

5.4%

2.1M shares

EcoR1 Capital, LLC

SC 13G/A · Feb 14, 2023

3.0%

1.1M shares

BlackRock, Inc.

SC 13G · Feb 3, 2023

7.9%

3.0M shares

BlackRock, Inc.

SC 13G/A · Apr 8, 2022

4.2%

1.6M shares

EcoR1 Capital, LLC

SC 13G/A · Feb 14, 2022

8.2%

1.9M shares

STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON 04-2456637

SC 13G · Jan 10, 2022

10.1%

0 shares