ProSomnus, Inc.

OSANASDAQHealthcare

$0.47

+$0.00(+0.00%)

Market Cap$8175227

P/E Ratio—

52W High$0.5

52W Low$0.47

Avg Volume59K

Open$0.50

Beta0.21

Insider Trades Ownership Employees

ProSomnus, Inc. (OSA) 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 · OSA · 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

NEUTRAL

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

ProSomnus, 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

OSA insider buying and selling by quarter

OSA insider selling · OSA insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

15.5M7.7M0

2022 Q4

2023 Q1

2023 Q3

2023 Q4

2024 Q1

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

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

Showing 8 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
Feb 15, 2024	Kim Sung CHIEF TECHNICAL OFFICER	Award	315,742	—	—	516,808	Form 4
Feb 15, 2024	Dow Brian B CHIEF FINANCIAL OFFICER	Award	315,742	—	—	409,492	Form 4
Feb 15, 2024	Liptak Len CHIEF EXECUTIVE OFFICER · Director	Award	1,322,756	—	—	1,957,216	Form 4
Oct 16, 2023	Rikkers Laing Director	Award	192,500	—	—	531,790	Form 4
Oct 16, 2023	Rikkers Laing Director	Other	82,025	$0.85	$70K	449,765	Form 4
Oct 16, 2023	Dow Brian B CFO	Award	93,750	—	—	93,750	Form 4
Oct 16, 2023	Kim Sung Chief Technical Officer	Award	93,750	—	—	201,066	Form 4
Oct 16, 2023	Liptak Len CEO · Director	Award	168,750	—	—	634,456	Form 4

Kim Sung

CHIEF TECHNICAL OFFICER

Award

Date

Feb 15

315,742

Price

—

Value

—

View Form 4 on SEC.gov

Dow Brian B

CHIEF FINANCIAL OFFICER

Award

Date

Feb 15

315,742

Price

—

Value

—

View Form 4 on SEC.gov

Liptak Len

CHIEF EXECUTIVE OFFICER · Director

Award

Date

Feb 15

1,322,756

Price

—

Value

—

View Form 4 on SEC.gov

Rikkers Laing

Director

Award

Date

Oct 16

192,500

Price

—

Value

—

View Form 4 on SEC.gov

Rikkers Laing

Director

Other

Date

Oct 16

82,025

Price

$0.85

Value

$70K

View Form 4 on SEC.gov

Dow Brian B

CFO

Award

Date

Oct 16

93,750

Price

—

Value

—

View Form 4 on SEC.gov

Kim Sung

Chief Technical Officer

Award

Date

Oct 16

93,750

Price

—

Value

—

View Form 4 on SEC.gov

Liptak Len

CEO · Director

Award

Date

Oct 16

168,750

Price

—

Value

—

View Form 4 on SEC.gov

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

About OSA insider trading

OSA insider trades

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

For ProSomnus, 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

OSA insider trading · 5 questions

The insiders of ProSomnus, Inc. (OSA) include executives and directors such as OSA, 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.

OSA board member insider tradingwho are OSA insidersOSA insider rosterProSomnus, 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