Porter Derrell
CIK: 0001706400
Director
Primary company: Atara Biotherapeutics, Inc. (ATRA)
Porter Derrell is a corporate insider at Atara Biotherapeutics, Inc. (ATRA) filing SEC Form 4 transactions. 31 transactions across 3 companies, totaling $0 in purchases and $1,033,708 in sales. Source: SEC EDGAR.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
| Exercise | 13,040 | $1.07 | $14K | 0 | 6/17/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 13,040 | $2.33 | $30K | 35,500 | 6/17/2026 Filed: 6/15/2026 | Filing → | |
| Exercise | 13,040 | $1.07 | $14K | 48,540 | 6/17/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 12,800 | $2.33 | $30K | 35,500 | 6/16/2026 Filed: 6/15/2026 | Filing → | |
| Exercise | 6,460 | $1.07 | $7K | 13,040 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Sale | 6,460 | $2.35 | $15K | 48,300 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Exercise | 6,460 | $1.07 | $7K | 54,760 | 6/15/2026 Filed: 6/15/2026 | Filing → | |
| Award | 19,500 | - | - | 19,500 | 6/4/2025 Filed: 6/5/2025 | Filing → | |
| Award | 12,800 | - | - | 12,800 | 6/4/2025 Filed: 6/5/2025 | Filing → | |
| Award | 201,857 | - | - | 201,857 | 5/28/2025 Filed: 5/30/2025 | Filing → | |
| Award | 25,000 | - | - | 25,000 | 6/10/2024 Filed: 6/10/2024 | Filing → | |
| Award | 47,693 | - | - | 47,693 | 5/21/2024 Filed: 5/23/2024 | Filing → | |
| Award | 25,000 | $0.00 | $0 | 25,000 | 6/6/2023 Filed: 6/7/2023 | Filing → | |
| Award | 24,000 | $0.00 | $0 | 24,000 | 5/25/2023 Filed: 5/26/2023 | Filing → | |
| Award | 50,000 | $0.00 | $0 | 50,000 | 1/4/2023 Filed: 1/4/2023 | Filing → | |
| Award | 24,000 | $0.00 | $0 | 24,000 | 5/26/2022 Filed: 5/31/2022 | Filing → | |
| Award | 33,836 | $0.00 | $0 | 33,836 | 5/27/2021 Filed: 5/28/2021 | Filing → | |
| Award | 10,000 | $0.00 | $0 | 31,688 | 3/26/2019 Filed: 3/27/2019 | Filing → | |
| Exercise | 4,000 | $0.00 | $0 | 109,666 | 2/15/2019 Filed: 2/19/2019 | Filing → | |
| Sale | 5,909 | $40.00 | $236K | 21,688 | 2/15/2019 Filed: 2/19/2019 | Filing → |
Type
Exercise
Shares
13,040
Price
$1.07
Value
$14K
Type
Sale
Shares
13,040
Price
$2.33
Value
$30K
Type
Exercise
Shares
13,040
Price
$1.07
Value
$14K
Type
Sale
Shares
12,800
Price
$2.33
Value
$30K
Type
Exercise
Shares
6,460
Price
$1.07
Value
$7K
Type
Sale
Shares
6,460
Price
$2.35
Value
$15K
Type
Exercise
Shares
6,460
Price
$1.07
Value
$7K
Type
Award
Shares
19,500
Price
-
Value
-
Type
Award
Shares
12,800
Price
-
Value
-
Type
Award
Shares
201,857
Price
-
Value
-
Type
Award
Shares
25,000
Price
-
Value
-
Type
Award
Shares
47,693
Price
-
Value
-
Type
Award
Shares
25,000
Price
$0.00
Value
$0
Type
Award
Shares
24,000
Price
$0.00
Value
$0
Type
Award
Shares
50,000
Price
$0.00
Value
$0
Type
Award
Shares
24,000
Price
$0.00
Value
$0
Type
Award
Shares
33,836
Price
$0.00
Value
$0
Type
Award
Shares
10,000
Price
$0.00
Value
$0
Type
Exercise
Shares
4,000
Price
$0.00
Value
$0
Type
Sale
Shares
5,909
Price
$40.00
Value
$236K
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