DAVIDSON DAVID

PrivateCIK: 1578696
Location

CAMBRIDGE, MA

DAVIDSON DAVID (Chief Medical Officer) sold 13.8% of their position (5.06K shares) of BLUEBIRD BIO, INC. on the open market

Open‑market sale worth $506.7K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderDAVIDSON DAVIDCIK 1578696
IssuerBLUEBIRD BIO, INC.CIK 1293971
Officer· Chief Medical Officer
Since Jul 2018
-5.06K
Net shares
Net seller
$506.7K
Total sold
2
Open market trades
0B · 2S
6
Total transactions
5.06K acquired · 10.12K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+3K

Price / share

$50.51

Trade value

$151.53K

% of position

9.5%
9/9/2019
31.62K34.62K

Common Stock

Direct
S · Sale

Shares

3K

Price / share

$100.11

Trade value

$300.34K

% of position

8.7%
9/9/2019
34.62K31.62K

Common Stock

Direct
M · Option Exercise

Shares

+2.06K

Price / share

$50.51

Trade value

$104.05K

% of position

6.5%
9/10/2019
31.62K33.68K

Common Stock

Direct
S · Sale

Shares

2.06K

Price / share

$100.16

Trade value

$206.32K

% of position

6.1%
9/10/2019
33.68K31.62K
Total

Net shares

+0.00

Net value

-$251.08K

Derivative Transactions2

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

3K shares

Shares

3K

Strike price

50.51

Held after

11.69K

Exercisable

9/9/2019

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

2.06K shares

Shares

2.06K

Strike price

50.51

Held after

9.63K

Exercisable

9/10/2019
DAVIDSON DAVID — Insider Transaction (Form 4) Filed Sep 11, 2019 | Finecho