Impel Pharmaceuticals Inc.

IMPLNASDAQHealthcare

$0.04

$-0.02(-27.27%)

Market Cap$956000

P/E Ratio—

52W High$4.2

52W Low$0.0212

Avg Volume1.0M

Open$0.05

Beta1.17

Insider Trades Ownership Employees

Impel Pharmaceuticals Inc. (IMPL) 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 · IMPL · as of Jun 9, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.00

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 0%Active transactions only · RSU vesting excluded100% Sell ↓

Impel Pharmaceuticals 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 9, 2026

IMPL insider buying and selling by quarter

IMPL insider selling · IMPL insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

1.3M668K0

2021 Q3

2021 Q4

2022 Q1

2022 Q2

2022 Q4

2023 Q1

2023 Q2

2023 Q4

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

IMPL executive sell shares · IMPL board member insider trading · IMPL insider trading SEC filing

Showing 35 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
Dec 15, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	87,934	$0.29	$26K	2,447,181	Form 4
Dec 18, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	209,029	$0.11	$23K	2,238,152	Form 4
Dec 19, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	208,657	$0.08	$17K	2,029,495	Form 4
Dec 15, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	12,066	$0.29	$3K	337,608	Form 4
Dec 18, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	28,682	$0.11	$3K	308,926	Form 4
Dec 19, 2023	Vivo Capital VIII, LLC 10 percent owner	Sale	28,632	$0.08	$2K	280,294	Form 4
Dec 31, 2022	Leaman John Harold Chief Fin. & Business Officer	Option	10,571	—	—	10,571	Form 4
Dec 31, 2022	Leaman John Harold Chief Fin. & Business Officer	Other	3,627	$3.75	$14K	6,944	Form 4
Mar 29, 2022	SHREWSBURY STEPHEN B Chief Medical Officer	Option	24,606	$1.97	$48K	97,990	Form 4
Dec 22, 2021	Hoekman John Chief Scientific Officer	Option	20,000	$1.64	$33K	128,221	Form 4
Nov 19, 2021	NELSON TIMOTHY S Director	Purchase	10,000	$10.76	$108K	10,000	Form 4
Sep 21, 2021	SHREWSBURY STEPHEN B Chief Medical Officer	Option	53,954	$2.95	$159K	73,384	Form 4
Sep 21, 2021	SHREWSBURY STEPHEN B Chief Medical Officer	Option	4,650	$2.46	$11K	19,430	Form 4
Sep 21, 2021	SHREWSBURY STEPHEN B Chief Medical Officer	Option	14,780	$1.97	$29K	14,780	Form 4
Aug 18, 2021	ADAMS ADRIAN COB, CEO and President · Director	Purchase	600	$15.89	$10K	20,000	Form 4
Aug 18, 2021	ADAMS ADRIAN COB, CEO and President · Director	Purchase	2,197	$14.91	$33K	19,400	Form 4
Aug 18, 2021	ADAMS ADRIAN COB, CEO and President · Director	Purchase	17,203	$13.81	$238K	17,203	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Purchase	505,620	$15.00	$7.58M⚡	2,535,115	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	89,145	$13.50	$1.20M⚡	2,029,495	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	315,328	—	—	1,940,350	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	440,119	—	—	1,625,022	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	474,713	—	—	1,184,903	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	710,190	—	—	710,190	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Purchase	69,380	$15.00	$1.04M⚡	349,674	Form 4
Apr 27, 2021	Vivo Capital VIII, LLC 10 percent owner	Other	12,311	$13.50	$166K	280,294	Form 4

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 15

87,934

Price

$0.29

Value

$26K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 18

209,029

Price

$0.11

Value

$23K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 19

208,657

Price

$0.08

Value

$17K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 15

12,066

Price

$0.29

Value

$3K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 18

28,682

Price

$0.11

Value

$3K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Sale

Date

Dec 19

28,632

Price

$0.08

Value

$2K

View Form 4 on SEC.gov

Leaman John Harold

Chief Fin. & Business Officer

Option

Date

Dec 31

10,571

Price

—

Value

—

View Form 4 on SEC.gov

Leaman John Harold

Chief Fin. & Business Officer

Other

Date

Dec 31

3,627

Price

$3.75

Value

$14K

View Form 4 on SEC.gov

SHREWSBURY STEPHEN B

Chief Medical Officer

Option

Date

Mar 29

24,606

Price

$1.97

Value

$48K

View Form 4 on SEC.gov

Hoekman John

Chief Scientific Officer

Option

Date

Dec 22

20,000

Price

$1.64

Value

$33K

View Form 4 on SEC.gov

NELSON TIMOTHY S

Director

Purchase

Date

Nov 19

10,000

Price

$10.76

Value

$108K

View Form 4 on SEC.gov

SHREWSBURY STEPHEN B

Chief Medical Officer

Option

Date

Sep 21

53,954

Price

$2.95

Value

$159K

View Form 4 on SEC.gov

SHREWSBURY STEPHEN B

Chief Medical Officer

Option

Date

Sep 21

4,650

Price

$2.46

Value

$11K

View Form 4 on SEC.gov

SHREWSBURY STEPHEN B

Chief Medical Officer

Option

Date

Sep 21

14,780

Price

$1.97

Value

$29K

View Form 4 on SEC.gov

ADAMS ADRIAN

COB, CEO and President · Director

Purchase

Date

Aug 18

600

Price

$15.89

Value

$10K

View Form 4 on SEC.gov

ADAMS ADRIAN

COB, CEO and President · Director

Purchase

Date

Aug 18

2,197

Price

$14.91

Value

$33K

View Form 4 on SEC.gov

ADAMS ADRIAN

COB, CEO and President · Director

Purchase

Date

Aug 18

17,203

Price

$13.81

Value

$238K

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Purchase

Date

Apr 27

505,620

Price

$15.00

Value

$7.58M ⚡

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

89,145

Price

$13.50

Value

$1.20M ⚡

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

315,328

Price

—

Value

—

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

440,119

Price

—

Value

—

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

474,713

Price

—

Value

—

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

710,190

Price

—

Value

—

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Purchase

Date

Apr 27

69,380

Price

$15.00

Value

$1.04M ⚡

View Form 4 on SEC.gov

Vivo Capital VIII, LLC

10 percent owner

Other

Date

Apr 27

12,311

Price

$13.50

Value

$166K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 2

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About IMPL insider trading

IMPL insider trades

Impel Pharmaceuticals Inc. (IMPL) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including IMPL. Over the past 12 months, 0 insiders have filed transactions with the SEC. IMPL insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Impel Pharmaceuticals Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

IMPL insider trading · 5 questions

The insiders of Impel Pharmaceuticals Inc. (IMPL) include executives and directors such as IMPL, 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.

IMPL board member insider tradingwho are IMPL insidersIMPL insider rosterImpel Pharmaceuticals Inc. executives insider activity

▸ 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