GRAN TIERRA ENERGY INC.

Company Announcement - Transaction in Own Shares

April 23, 2019

On March 11, 2019 Gran Tierra Energy Inc. ("Gran Tierra") announced a normal course issuer bid (the "NCIB") through the facilities of the Toronto Stock Exchange ("TSX") and eligible alternative trading platforms in Canada. The Company received regulatory approval from the TSX to commence the 2019 NCIB on March 13, 2019. Pursuant to the NCIB, Gran Tierra may purchase for cancellation up to 19,353,951 of its shares of common stock for a one year period at prevailing market prices at the time of purchase. The NCIB commenced on March 13, 2019 and will expire on March 12, 2020 or earlier if the 5.00% share maximum is reached. The purpose of the NCIB is to reduce the share capital of Gran Tierra.

The following transactions were made under the NCIB during the period April 15, 2019 to April 18, 2019:

Transaction Date

Daily total volume

Daily volume weighted

Gross Value (CAD)

(# Shares)

average price of shares

acquired (CAD)

April 15, 2019

167,525

$3.38

$565,711.25

April 16, 2019

167,525

$3.30

$553,526.50

April 17, 2019

167,525

$3.25

$545,066.75

April 18, 2019

167,525

$3.19

$535,226.50

Exchange Aggregated Data

Volume

Volume weighted average price

(CAD)

Platform

Apr. 15, 2019

Apr. 16, 2019

Apr. 17, 2019

Apr. 18, 2019

TSX

80,925

73,725

68,425

79,925

Pure

6,600

5,000

5,700

7,600

Chi-X

21,800

29,500

22,300

16,200

Omega

0

100

4,700

9,400

Alpha

0

100

0

0

NEO

58,200

59,100

66,400

54,400

TSX

$3.37

$3.30

$3.26

$3.19

Pure

$3.38

$3.31

$3.21

$3.20

Chi-X

$3.37

$3.30

$3.24

$3.19

Omega

-

$3.31

$3.22

$3.20

Alpha

-

$3.31

-

-

NEO

$3.38

$3.30

$3.26

$3.20

All transactions were made under ISIN US38500T1016 and effected by RBC Dominion Securities Inc. on behalf of Gran Tierra. A full breakdown of the individual trades is attached to this announcement. Gran Tierra intends to cancel all of the purchased shares. Following the above transactions, Gran Tierra will have 381,812,332 issued and outstanding shares.

Contact Information:

Gary Guidry

Chief Executive Officer

Ryan Ellson

Chief Financial Officer

Rodger Trimble

Vice President, Investor Relations

(403)265-3221info@grantierra.com

Transaction

Time

Date

Time

Zone

Volume

Price

Currency

Platform

April 15, 2019

09:31:55

EDT

800

3.34

CAD

NEO

April 15, 2019

09:31:55

EDT

200

3.34

CAD

NEO

April 15, 2019

09:32:23

EDT

900

3.34

CAD

TSX

April 15, 2019

09:32:23

EDT

100

3.34

CAD

TSX

April 15, 2019

09:35:41

EDT

100

3.34

CAD

NEO

April 15, 2019

09:35:41

EDT

1600

3.34

CAD

Chi-X

April 15, 2019

09:36:10

EDT

100

3.34

CAD

TSX

April 15, 2019

09:36:58

EDT

100

3.34

CAD

TSX

April 15, 2019

09:37:11

EDT

2200

3.34

CAD

TSX

April 15, 2019

09:37:11

EDT

200

3.34

CAD

TSX

April 15, 2019

09:39:57

EDT

100

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

800

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

1800

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

1500

3.35

CAD

NEO

April 15, 2019

09:42:20

EDT

600

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

700

3.35

CAD

NEO

April 15, 2019

09:42:20

EDT

500

3.35

CAD

NEO

April 15, 2019

09:42:20

EDT

200

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

600

3.35

CAD

TSX

April 15, 2019

09:42:20

EDT

100

3.35

CAD

TSX

April 15, 2019

09:42:21

EDT

300

3.35

CAD

TSX

April 15, 2019

09:42:21

EDT

300

3.35

CAD

NEO

April 15, 2019

09:42:21

EDT

500

3.35

CAD

NEO

April 15, 2019

09:42:21

EDT

300

3.35

CAD

NEO

April 15, 2019

09:42:21

EDT

500

3.35

CAD

NEO

April 15, 2019

09:42:21

EDT

200

3.35

CAD

NEO

April 15, 2019

09:51:17

EDT

200

3.36

CAD

TSX

April 15, 2019

09:51:17

EDT

600

3.36

CAD

TSX

April 15, 2019

09:51:17

EDT

700

3.36

CAD

TSX

April 15, 2019

09:52:21

EDT

1500

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

400

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

100

3.37

CAD

NEO

April 15, 2019

09:52:21

EDT

100

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

100

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

100

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

200

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

200

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

100

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

300

3.37

CAD

TSX

April 15, 2019

09:52:21

EDT

1500

3.37

CAD

Chi-X

April 15, 2019

09:52:21

EDT

200

3.37

CAD

TSX

April 15, 2019

09:53:37

EDT

400

3.36

CAD

TSX

April 15, 2019

09:53:37

EDT

600

3.36

CAD

NEO

April 15, 2019

10:06:47

EDT

1400

3.4

CAD

NEO

April 15, 2019

10:06:47

EDT

400

3.4

CAD

TSX

April 15, 2019

10:06:47

EDT

1400

3.4

CAD

NEO

April 15, 2019

10:06:47

EDT

400

3.4

CAD

NEO

April 15, 2019

10:06:47

EDT

300

3.4

CAD

NEO

April 15, 2019

10:06:47

EDT

500

3.4

CAD

TSX

April 15, 2019

10:06:47

EDT

600

3.4

CAD

TSX

April 15, 2019

10:06:47

EDT

700

3.4

CAD

NEO

April 15, 2019

10:06:47

EDT

100

3.4

CAD

NEO

April 15, 2019

10:06:49

EDT

1300

3.4

CAD

TSX

April 15, 2019

10:06:49

EDT

1100

3.4

CAD

TSX

April 15, 2019

10:06:49

EDT

300

3.4

CAD

TSX

April 15, 2019

10:06:49

EDT

1300

3.4

CAD

NEO

April 15, 2019

10:10:19

EDT

100

3.4

CAD

NEO

April 15, 2019

10:18:33

EDT

1800

3.41

CAD

NEO

April 15, 2019

10:20:40

EDT

1900

3.41

CAD

TSX

April 15, 2019

10:20:40

EDT

1900

3.41

CAD

NEO

April 15, 2019

10:20:40

EDT

1300

3.41

CAD

NEO

April 15, 2019

10:20:41

EDT

600

3.41

CAD

NEO

April 15, 2019

10:20:41

EDT

300

3.41

CAD

TSX

April 15, 2019

10:20:43

EDT

600

3.41

CAD

NEO

April 15, 2019

10:20:48

EDT

1200

3.41

CAD

TSX

April 15, 2019

10:20:48

EDT

1300

3.41

CAD

NEO

April 15, 2019

10:20:48

EDT

300

3.41

CAD

TSX

April 15, 2019

10:20:48

EDT

1500

3.41

CAD

TSX

April 15, 2019

10:20:48

EDT

500

3.41

CAD

TSX

April 15, 2019

10:20:48

EDT

100

3.41

CAD

NEO

April 15, 2019

10:26:00

EDT

700

3.4

CAD

NEO

April 15, 2019

10:26:00

EDT

300

3.4

CAD

NEO

April 15, 2019

10:26:00

EDT

800

3.4

CAD

TSX

April 15, 2019

10:26:00

EDT

200

3.4

CAD

TSX

April 15, 2019

10:29:10

EDT

100

3.39

CAD

NEO

April 15, 2019

10:29:10

EDT

100

3.39

CAD

NEO

April 15, 2019

10:29:10

EDT

800

3.39

CAD

TSX

April 15, 2019

10:29:10

EDT

200

3.39

CAD

TSX

April 15, 2019

10:29:10

EDT

800

3.39

CAD

NEO

April 15, 2019

10:43:19

EDT

800

3.39

CAD

Chi-X

April 15, 2019

10:43:20

EDT

500

3.39

CAD

TSX

April 15, 2019

10:43:20

EDT

1000

3.39

CAD

TSX

April 15, 2019

10:43:20

EDT

100

3.39

CAD

TSX

April 15, 2019

10:43:20

EDT

1000

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

300

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

800

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

200

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

100

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

1000

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

700

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

1300

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

200

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

300

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

100

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

300

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

100

3.39

CAD

TSX

April 15, 2019

10:43:52

EDT

100

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

100

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

1000

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

300

3.39

CAD

NEO

April 15, 2019

10:43:52

EDT

200

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

100

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

500

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

200

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

1200

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

800

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

700

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

100

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

100

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

100

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

300

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

200

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

200

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

1800

3.39

CAD

TSX

April 15, 2019

11:02:14

EDT

500

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

2700

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

100

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

1000

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

500

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

200

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

500

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

300

3.39

CAD

NEO

April 15, 2019

11:02:14

EDT

200

3.39

CAD

NEO

April 15, 2019

11:06:17

EDT

600

3.38

CAD

TSX

April 15, 2019

11:06:17

EDT

100

3.38

CAD

TSX

April 15, 2019

11:06:18

EDT

100

3.38

CAD

TSX

April 15, 2019

11:06:18

EDT

100

3.38

CAD

TSX

April 15, 2019

11:07:17

EDT

100

3.38

CAD

TSX

April 15, 2019

11:08:27

EDT

2200

3.38

CAD

NEO

April 15, 2019

11:08:27

EDT

2600

3.38

CAD

TSX

April 15, 2019

11:08:27

EDT

400

3.38

CAD

NEO

April 15, 2019

11:12:14

EDT

800

3.37

CAD

TSX

April 15, 2019

11:12:59

EDT

200

3.37

CAD

TSX

April 15, 2019

11:13:59

EDT

100

3.37

CAD

NEO

April 15, 2019

11:14:04

EDT

100

3.37

CAD

NEO

April 15, 2019

11:18:12

EDT

900

3.38

CAD

NEO

April 15, 2019

11:18:12

EDT

500

3.38

CAD

NEO

April 15, 2019

11:23:17

EDT

300

3.38

CAD

TSX

April 15, 2019

11:23:17

EDT

700

3.38

CAD

TSX

April 15, 2019

11:23:17

EDT

600

3.38

CAD

TSX

April 15, 2019

11:25:04

EDT

900

3.37

CAD

TSX

April 15, 2019

11:25:04

EDT

400

3.37

CAD

TSX

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Disclaimer

Gran Tierra Energy Inc. published this content on 23 April 2019 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 23 April 2019 22:58:05 UTC