ITS
InsiderTrading
TradesInsidersCompaniesCluster BuysRankingsAbout
ITS
InsiderTrading Screener

Track SEC Form 4 insider trades. See what corporate insiders are buying and selling.

Browse

  • Trades
  • Insiders
  • Companies
  • Cluster Buys
  • Rankings

Top Insiders

  • Mark Zuckerberg
  • Elon Musk
  • Jamie Dimon
  • Satya Nadella
  • Lisa Su
  • Jensen Huang

Screeners

  • CEO & CFO Purchases
  • Director Purchases
  • Top Buys This Week
  • Top Sales This Week
  • 10b5-1 Trades
  • Buy/Sell Ratios
  • Politician Overlap
  • Sectors

Learn

  • Learn
  • What is a Form 4?
  • About & Methodology
  • What are Cluster Buys?
  • Top Insider Rankings
  • Contact Us
  • Privacy Policy
  • Terms of Use

Data

  • SEC EDGAR Form 4 ↗
  • CongressStock.com ↗
  • Track13F.com ↗
  • About the data
© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.
Home/Insiders/Frichtl Mark

Frichtl Mark

Officer

Officer
Total trades
47
Bought (open market)
$0
Sold (open market)
$28.1M
Tickers traded
1
Frichtl Mark, Chief Technology Officer of Ouster (OUST), has been a consistent seller of company stock over the past month, with Form 4 filings showing 19 open-market sales since early May 2026. The transactions are concentrated in OUST shares and total roughly $27.5 million in sell value across all recent filings, with no corresponding open-market purchases. The selling pattern is heavily clustered around late May, with the largest single-day activity occurring on May 26, when six separate sales totaled approximately $10.8 million, including individual transactions of $3.06 million, $2.89 million, and $2.02 million. Earlier in the month, sales on May 13 and May 22 each exceeded $4 million in aggregate, with multiple smaller dispositions interspersed. The filings also reveal a recurring mechanical component: Frichtl executed several option exercises (coded "M") on the same days as the sales, including exercises valued at $711,896 on May 22, $568,800 on May 14, and $303,469 on May 13. These exercises are typically paired with same-day sales, a pattern consistent with a cashless exercise-and-sell arrangement rather than a discretionary accumulation of shares. Notably, there are no grants, gifts, or purchases in the recent data, and the total buy value across all 44 filings is zero, underscoring a one-directional bias toward liquidation. The most recent transaction, a $714,887 sale on June 12, suggests the selling cadence has continued into the current month, though at a smaller scale than the late-May cluster. Across the entire filing history, Frichtl has transacted exclusively in OUST, with total sell value of $27.48 million and no acquired shares outside of option exercises. The data indicates a sustained reduction in his direct and indirect holdings, driven by open-market sales that are frequently tied to the exercise of existing options, with no evidence of new share accumulation.

AI-assisted summary

12-month activity

Monthly buy vs sell totals from Frichtl Mark's Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$00
December 2025$0$391K1
January 2026$0$00
February 2026$0$00
March 2026$0$1.2M3
April 2026$0$3.8M13
May 2026$0$20.7M25
June 2026$0$715K1
July 2026$0$00
August 2026$0$01
September 2026$0$638K2

Recent trades

Most recent Form 4 filings by Frichtl Mark.

  • Frichtl Marksold18,778 shares ofOUSTat $33.96$638KSep 14 · filed Sep 16Details
  • Frichtl Markgifted38,745 shares ofOUSTat $0Sep 2 · filed Sep 4Details
  • Frichtl Markexercised100,000 shares ofOUSTat $14.22$1.4MAug 26 · filed Aug 28Details

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
  • Frichtl Marksold18,414 shares ofOUSTat $38.823$715KJun 12 · filed Jun 16Details
  • Frichtl Marksold3,742 shares ofOUSTat $45$168KMay 26 · filed May 27Details
  • Frichtl Marksold45,000 shares ofOUSTat $43$1.9MMay 26 · filed May 27Details
  • Frichtl Marksold48,191 shares ofOUSTat $41.991$2MMay 26 · filed May 27Details
  • Frichtl Marksold70,558 shares ofOUSTat $40.9$2.9MMay 26 · filed May 27Details
  • Frichtl Marksold76,582 shares ofOUSTat $39.944$3.1MMay 26 · filed May 27Details
  • Frichtl Marksold19,669 shares ofOUSTat $39.16$770KMay 26 · filed May 27Details
  • Frichtl Marksold35,684 shares ofOUSTat $36.387$1.3MMay 22 · filed May 27Details
  • Frichtl Markexercised50,063 shares ofOUSTat $14.22$712KMay 22 · filed May 27Details
  • Frichtl Marksold40,000 shares ofOUSTat $37.164$1.5MMay 22 · filed May 27Details
  • Frichtl Marksold4,316 shares ofOUSTat $36.001$155KMay 15Details
  • Frichtl Markexercised4,316 shares ofOUSTat $14.22$61KMay 15Details
  • Frichtl Marksold40,000 shares ofOUSTat $35$1.4MMay 14 · filed May 15Details
  • Frichtl Markexercised40,000 shares ofOUSTat $14.22$569KMay 14 · filed May 15Details
  • Frichtl Marksold31,434 shares ofOUSTat $31.093$977KMay 13 · filed May 15Details
  • Frichtl Marksold13,659 shares ofOUSTat $34$464KMay 13 · filed May 15Details
  • Frichtl Marksold32,500 shares ofOUSTat $33$1.1MMay 13 · filed May 15Details
  • View all 47 trades →