F-star Therapeutics, Inc.
F-star Therapeutics, Inc. (FSTX) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · FSTX · as of Jun 9, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
F-star Therapeutics, Inc. insiders have shown mixed buying and selling activity over the past 12 Months.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 9, 2026
FSTX insider buying and selling by quarter
FSTX insider selling · FSTX insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 9, 2026
Recent insider transactions
FSTX executive sell shares · FSTX board member insider trading · FSTX insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Mar 8, 2023 | Kayitalire Louis CHIEF MEDICAL OFFICER | Other | 29,236 | $208K | Form 4 |
| Mar 8, 2023 | Kayitalire Louis CHIEF MEDICAL OFFICER | Other | 25,019 | $178K | Form 4 |
| Mar 8, 2023 | Forster Eliot PRESIDENT AND CEO · Director | Other | 347,578 | $2.47M⚡ | Form 4 |
| Mar 8, 2023 | Forster Eliot PRESIDENT AND CEO · Director | Other | 73,959 | $527K | Form 4 |
| Mar 8, 2023 | DEPTULA-HICKS DARLENE M See Remarks | Other | 30,898 | $220K | Form 4 |
| Mar 8, 2023 | DEPTULA-HICKS DARLENE M See Remarks | Other | 25,539 | $182K | Form 4 |
| Mar 8, 2023 | Brady Todd C Director | Other | 15,004 | $107K | Form 4 |
| Mar 8, 2023 | Brewis Neil CHIEF SCIENTIFIC OFFICER | Other | 105,088 | $748K | Form 4 |
| Mar 8, 2023 | Brewis Neil CHIEF SCIENTIFIC OFFICER | Other | 9,375 | $67K | Form 4 |
| Mar 8, 2023 | Race Geoffrey Director | Other | 3,937 | $28K | Form 4 |
| Mar 8, 2023 | Bermingham Nessan Director | Other | 97,547 | $695K | Form 4 |
| Mar 8, 2023 | Bermingham Nessan Director | Other | 6,328 | $45K | Form 4 |
| Mar 8, 2023 | Benz Edward JR Director | Other | 4,385 | $31K | Form 4 |
| Mar 8, 2023 | Arkowitz David Director | Other | 8,386 | $60K | Form 4 |
| Jul 29, 2022 | Brewis Neil Chief Scientific Officer | Option | 76,619 | $8K | Form 4 |
| Nov 2, 2021 | Kayitalire Louis Chief Medical Officer | Sale | 39 | $266 | Form 4 |
| Nov 2, 2021 | Kayitalire Louis Chief Medical Officer | Sale | 25 | $171 | Form 4 |
| Oct 4, 2021 | Kayitalire Louis Chief Medical Officer | Sale | 64 | $462 | Form 4 |
| Jul 2, 2021 | Kayitalire Louis Chief Medical Officer | Sale | 1,054 | $9K | Form 4 |
Kayitalire Louis
CHIEF MEDICAL OFFICER
Date
Mar 8
Shares
29,236
Price
$7.12
Value
$208K
Kayitalire Louis
CHIEF MEDICAL OFFICER
Date
Mar 8
Shares
25,019
Price
$7.12
Value
$178K
Forster Eliot
PRESIDENT AND CEO · Director
Date
Mar 8
Shares
347,578
Price
$7.12
Value
$2.47M ⚡
Forster Eliot
PRESIDENT AND CEO · Director
Date
Mar 8
Shares
73,959
Price
$7.12
Value
$527K
DEPTULA-HICKS DARLENE M
See Remarks
Date
Mar 8
Shares
30,898
Price
$7.12
Value
$220K
DEPTULA-HICKS DARLENE M
See Remarks
Date
Mar 8
Shares
25,539
Price
$7.12
Value
$182K
Brewis Neil
CHIEF SCIENTIFIC OFFICER
Date
Mar 8
Shares
105,088
Price
$7.12
Value
$748K
Brewis Neil
CHIEF SCIENTIFIC OFFICER
Date
Mar 8
Shares
9,375
Price
$7.12
Value
$67K
Brewis Neil
Chief Scientific Officer
Date
Jul 29
Shares
76,619
Price
$0.11
Value
$8K
Kayitalire Louis
Chief Medical Officer
Date
Jul 2
Shares
1,054
Price
$8.43
Value
$9K
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About FSTX insider trading
FSTX insider trades
F-star Therapeutics, Inc. (FSTX) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including FSTX. Over the past 12 months, 0 insiders have filed transactions with the SEC. FSTX insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For F-star Therapeutics, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
FSTX insider trading · 5 questionsThe insiders of F-star Therapeutics, Inc. (FSTX) include executives and directors such as FSTX, among others. Over the past 12 months, 0 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026