Alpine Immune Sciences, Inc.
Alpine Immune Sciences, Inc. (ALPN) 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 · ALPN · as of Jun 8, 2026
Activity summary
Buy transactions
2
P-Purchase only
Sell transactions
33
12 Months
Buy/Sell ratio
0.06
Buy/Sell (by trades)
Overall sentiment
Alpine Immune Sciences, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
ALPN insider buying and selling by quarter
ALPN insider selling · ALPN 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 8, 2026
Recent insider transactions
ALPN executive sell shares · ALPN board member insider trading · ALPN insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 20, 2024 | Peetz Christopher Director | Other | 1,900 | $124K | Form 4 |
| May 20, 2024 | CONWAY ROBERT E Director | Other | 50,000 | $3.25M⚡ | Form 4 |
| May 18, 2024 | Topper James N Director | Other | 2,829,347 | $183.91M⚡ | Form 4 |
| May 18, 2024 | Thompson Peter A. Director | Other | 264,315 | $17.18M⚡ | Form 4 |
| May 18, 2024 | Cui Xiangmin Director | Other | 1,735,544 | $112.81M⚡ | Form 4 |
| May 20, 2024 | Rickey James Paul See Remarks | Other | 26,761 | $1.74M⚡ | Form 4 |
| May 20, 2024 | Rickey James Paul See Remarks | Other | 31,200 | $2.03M⚡ | Form 4 |
| May 20, 2024 | PENG STANFORD L See Remarks | Other | 296,163 | $19.25M⚡ | Form 4 |
| May 20, 2024 | PENG STANFORD L See Remarks | Other | 48,000 | $3.12M⚡ | Form 4 |
| May 20, 2024 | GOLD MITCHELL Executive Chairman and CEO · Director | Other | 13,245 | $861K | Form 4 |
| May 18, 2024 | GOLD MITCHELL Executive Chairman and CEO · Director | Other | 2,627,157 | $170.77M⚡ | Form 4 |
| May 20, 2024 | GOLD MITCHELL Executive Chairman and CEO · Director | Other | 96,000 | $6.24M⚡ | Form 4 |
| May 20, 2024 | FUHS ULRICH MARTIN CAO | Other | 22,820 | $1.48M⚡ | Form 4 |
| May 20, 2024 | FUHS ULRICH MARTIN CAO | Other | 7,300 | $475K | Form 4 |
| May 20, 2024 | DURAND REMY Chief Business Officer | Other | 102,192 | $6.64M⚡ | Form 4 |
| May 20, 2024 | DURAND REMY Chief Business Officer | Other | 31,200 | $2.03M⚡ | Form 4 |
| May 18, 2024 | ORBIMED ADVISORS LLC Director | Other | 264,315 | $17.18M⚡ | Form 4 |
| May 8, 2024 | PENG STANFORD L See Remarks | Option | 13,377 | $85K | Form 4 |
| May 8, 2024 | PENG STANFORD L See Remarks | Option | 26,912 | $87K | Form 4 |
| May 8, 2024 | PENG STANFORD L See Remarks | Option | 22,593 | $256K | Form 4 |
Topper James N
Director
Date
May 18
Shares
2,829,347
Price
$65.00
Value
$183.91M ⚡
Thompson Peter A.
Director
Date
May 18
Shares
264,315
Price
$65.00
Value
$17.18M ⚡
Rickey James Paul
See Remarks
Date
May 20
Shares
26,761
Price
$65.00
Value
$1.74M ⚡
Rickey James Paul
See Remarks
Date
May 20
Shares
31,200
Price
$65.00
Value
$2.03M ⚡
PENG STANFORD L
See Remarks
Date
May 20
Shares
296,163
Price
$65.00
Value
$19.25M ⚡
GOLD MITCHELL
Executive Chairman and CEO · Director
Date
May 20
Shares
13,245
Price
$65.00
Value
$861K
GOLD MITCHELL
Executive Chairman and CEO · Director
Date
May 18
Shares
2,627,157
Price
$65.00
Value
$170.77M ⚡
GOLD MITCHELL
Executive Chairman and CEO · Director
Date
May 20
Shares
96,000
Price
$65.00
Value
$6.24M ⚡
DURAND REMY
Chief Business Officer
Date
May 20
Shares
102,192
Price
$65.00
Value
$6.64M ⚡
DURAND REMY
Chief Business Officer
Date
May 20
Shares
31,200
Price
$65.00
Value
$2.03M ⚡
ORBIMED ADVISORS LLC
Director
Date
May 18
Shares
264,315
Price
$65.00
Value
$17.18M ⚡
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About ALPN insider trading
ALPN insider trades
Alpine Immune Sciences, Inc. (ALPN) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including ALPN. Over the past 12 months, 0 insiders have filed transactions with the SEC. ALPN insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Alpine Immune Sciences, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
ALPN insider trading · 5 questionsThe insiders of Alpine Immune Sciences, Inc. (ALPN) include executives and directors such as ALPN, 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 8, 2026