BLUE

bluebird bio, Inc.

Insider trading activity for bluebird bio, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Transaction history

The 36 most recent Form 4 transactions.

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Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Jun 2, 2025	Vittiglio Joseph	Chief Business & Legal…	DTOISS	2,500	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Vittiglio Joseph	Chief Business & Legal…	AGRANT	2,500	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Vittiglio Joseph	Chief Business & Legal…	DTOISS	3,125	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Vachon Mark	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Tita-Reid Najoh	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Sterling O. James	Chief Financial Officer	DTOISS	2,500	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Sterling O. James	Chief Financial Officer	AGRANT	2,500	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Sterling O. James	Chief Financial Officer	DTOISS	5,000	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Paulson Richard A.	Director	DTOISS	1,323	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Obenshain Andrew	President and CEO	DTOISS	14,820	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Obenshain Andrew	President and CEO	AGRANT	14,820	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Obenshain Andrew	President and CEO	DTOISS	9,300	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Leschly Nick	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Leiderman Elisabeth	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Klima Thomas J	See Remarks	DTOISS	2,500	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Klima Thomas J	See Remarks	AGRANT	2,500	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Klima Thomas J	See Remarks	DTOISS	4,464	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Jones-Burton Charlotte	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Colvin Richard A	Chief Medical Officer	DTOISS	2,500	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Colvin Richard A	Chief Medical Officer	AGRANT	2,500	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Colvin Richard A	Chief Medical Officer	DTOISS	4,166	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Cloonan Michael	Director	DTOISS	1,867	—	—	-100.0%	Open the original filing on SEC.gov
Jun 2, 2025	Agwunobi John O	Director	DTOISS	1,245	—	—	-100.0%	Open the original filing on SEC.gov
May 30, 2025	Vittiglio Joseph	Chief Business & Legal…	UTENDR	1,143	—	—	-26.8%	Open the original filing on SEC.gov
May 30, 2025	Vachon Mark	Director	UTENDR	1,252	—	—	-50.1%	Open the original filing on SEC.gov
May 30, 2025	Tita-Reid Najoh	Director	UTENDR	1,163	—	—	-48.3%	Open the original filing on SEC.gov
May 30, 2025	Paulson Richard A.	Director	UTENDR	155	—	—	-10.5%	Open the original filing on SEC.gov
May 30, 2025	Obenshain Andrew	President and CEO	UTENDR	9,027	—	—	-49.3%	Open the original filing on SEC.gov
May 30, 2025	Leschly Nick	Director	UTENDR	6,150	—	—	-100.0%	Open the original filing on SEC.gov
May 30, 2025	Leschly Nick	Director	UTENDR	2,284	—	—	-100.0%	Open the original filing on SEC.gov
May 30, 2025	Leschly Nick	Director	UTENDR	14,416	—	—	-92.0%	Open the original filing on SEC.gov
May 30, 2025	Leiderman Elisabeth	Director	UTENDR	1,112	—	—	-47.2%	Open the original filing on SEC.gov
May 30, 2025	Klima Thomas J	See Remarks	UTENDR	3,414	—	—	-43.3%	Open the original filing on SEC.gov
May 30, 2025	Jones-Burton Charlotte	Director	UTENDR	928	—	—	-42.7%	Open the original filing on SEC.gov
May 30, 2025	Colvin Richard A	Chief Medical Officer	UTENDR	3,552	—	—	-46.0%	Open the original filing on SEC.gov
May 30, 2025	Agwunobi John O	Director	UTENDR	1,323	—	—	-51.5%	Open the original filing on SEC.gov

DTOISS—

Vittiglio Joseph · Chief Business &…Jun 2, 2025

2,500 sh · -100.0% own

AGRANT—

Vittiglio Joseph · Chief Business &…Jun 2, 2025

2,500 sh

DTOISS—

Vittiglio Joseph · Chief Business &…Jun 2, 2025

3,125 sh · -100.0% own

DTOISS—

Vachon Mark · DirectorJun 2, 2025

1,245 sh · -100.0% own

DTOISS—

Tita-Reid Najoh · DirectorJun 2, 2025

1,245 sh · -100.0% own

DTOISS—

Sterling O. James · Chief Financial…Jun 2, 2025

2,500 sh · -100.0% own

AGRANT—

Sterling O. James · Chief Financial…Jun 2, 2025

2,500 sh

DTOISS—

Sterling O. James · Chief Financial…Jun 2, 2025

5,000 sh · -100.0% own

DTOISS—

Paulson Richard A. · DirectorJun 2, 2025

1,323 sh · -100.0% own

DTOISS—

Obenshain Andrew · President and CEOJun 2, 2025

14,820 sh · -100.0% own

AGRANT—

Obenshain Andrew · President and CEOJun 2, 2025

14,820 sh

DTOISS—

Obenshain Andrew · President and CEOJun 2, 2025

9,300 sh · -100.0% own

DTOISS—

Leschly Nick · DirectorJun 2, 2025

1,245 sh · -100.0% own

DTOISS—

Leiderman Elisabeth · DirectorJun 2, 2025

1,245 sh · -100.0% own

DTOISS—

Klima Thomas J · See RemarksJun 2, 2025

2,500 sh · -100.0% own

AGRANT—

Klima Thomas J · See RemarksJun 2, 2025

2,500 sh

DTOISS—

Klima Thomas J · See RemarksJun 2, 2025

4,464 sh · -100.0% own

DTOISS—

Jones-Burton Charlotte · DirectorJun 2, 2025

1,245 sh · -100.0% own

DTOISS—

Colvin Richard A · Chief Medical…Jun 2, 2025

2,500 sh · -100.0% own

AGRANT—

Colvin Richard A · Chief Medical…Jun 2, 2025

2,500 sh

DTOISS—

Colvin Richard A · Chief Medical…Jun 2, 2025

4,166 sh · -100.0% own

DTOISS—

Cloonan Michael · DirectorJun 2, 2025

1,867 sh · -100.0% own

DTOISS—

Agwunobi John O · DirectorJun 2, 2025

1,245 sh · -100.0% own

UTENDR—

Vittiglio Joseph · Chief Business &…May 30, 2025

1,143 sh · -26.8% own

UTENDR—

Vachon Mark · DirectorMay 30, 2025

1,252 sh · -50.1% own

UTENDR—

Tita-Reid Najoh · DirectorMay 30, 2025

1,163 sh · -48.3% own

UTENDR—

Paulson Richard A. · DirectorMay 30, 2025

155 sh · -10.5% own

UTENDR—

Obenshain Andrew · President and CEOMay 30, 2025

9,027 sh · -49.3% own

UTENDR—

Leschly Nick · DirectorMay 30, 2025

6,150 sh · -100.0% own

UTENDR—

Leschly Nick · DirectorMay 30, 2025

2,284 sh · -100.0% own

UTENDR—

Leschly Nick · DirectorMay 30, 2025

14,416 sh · -92.0% own

UTENDR—

Leiderman Elisabeth · DirectorMay 30, 2025

1,112 sh · -47.2% own

UTENDR—

Klima Thomas J · See RemarksMay 30, 2025

3,414 sh · -43.3% own

UTENDR—

Jones-Burton Charlotte · DirectorMay 30, 2025

928 sh · -42.7% own

UTENDR—

Colvin Richard A · Chief Medical…May 30, 2025

3,552 sh · -46.0% own

UTENDR—

Agwunobi John O · DirectorMay 30, 2025

1,323 sh · -51.5% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 13 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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