DAVIDSON DAVID (Chief Medical Officer) sold 19.5% of their position (7.66K shares) of BLUEBIRD BIO, INC. on the open market

Open‑market sale worth $991.7K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales

DAVIDSON DAVID

Filed: 7/9/2019ACC: 0001209191-19-041552

InsiderDAVIDSON DAVIDCIK 1578696

→

IssuerBLUEBIRD BIO, INC.CIK 1293971

Officer· Chief Medical Officer

Since Jul 2018

-7.66K

Net shares

Net seller

$991.7K

Total sold

Open market trades

0B · 4S

Total transactions

7.66K acquired · 15.32K disposed

Non-Derivative Transactions6

Common Stock

Direct

M · Option Exercise

+7.33K

Price / share

$50.51

Trade value

$370.24K

% of position

23.2%

7/5/2019

31.62K→38.95K

Common Stock

Direct

M · Option Exercise

+330.00

Price / share

$5.50

Trade value

$1.82K

% of position

0.8%

7/5/2019

38.95K→39.28K

Common Stock

Direct

S · Sale

−2.83K

Price / share

$128.28

Trade value

$362.77K

% of position

7.2%

7/5/2019

39.28K→36.45K

Common Stock

Direct

S · Sale

−832.00

Price / share

$129.32

Trade value

$107.59K

% of position

2.3%

7/5/2019

36.45K→35.62K

Common Stock

Direct

S · Sale

−3.30K

Price / share

$130.05

Trade value

$429.15K

% of position

9.3%

7/5/2019

35.62K→32.32K

Common Stock

Direct

S · Sale

−700.00

Price / share

$131.77

Trade value

$92.24K

% of position

2.2%

7/5/2019

32.32K→31.62K

Total

Net shares

+0.00

Net value

-$619.69K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	7/5/2019	M · Option Exercise	+7.33K	$50.51	$370.24K	23.2%	31.62K	38.95K
Common Stock Direct	7/5/2019	M · Option Exercise	+330.00	$5.50	$1.82K	0.8%	38.95K	39.28K
Common Stock Direct	7/5/2019	S · Sale	−2.83K	$128.28	$362.77K	7.2%	39.28K	36.45K
Common Stock Direct	7/5/2019	S · Sale	−832.00	$129.32	$107.59K	2.3%	36.45K	35.62K
Common Stock Direct	7/5/2019	S · Sale	−3.30K	$130.05	$429.15K	9.3%	35.62K	32.32K
Common Stock Direct	7/5/2019	S · Sale	−700.00	$131.77	$92.24K	2.2%	32.32K	31.62K
Total			+0.00		-$619.69K

Derivative Transactions2

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

7.33K shares

−7.33K

Strike price

50.51

Held after

19.75K

Exercisable

—

7/5/2019

Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

330.00 shares

−330.00

Strike price

5.5004

Held after

0.00

Exercisable

—

7/5/2019

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (right to buy) Direct	Common Stock7.33K shares	7/5/2019	M · Option Exercise	−7.33K	50.51	—	19.75K
Stock Option (right to buy) Direct	Common Stock330.00 shares	7/5/2019	M · Option Exercise	−330.00	5.5004	—	0.00