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SCHEDULE Filed 2025-02-14 Event 2024-08-12 SEC 0001104659-25-014247 →

Greenhaven Road Investment Management, L.P. MARKETWISE, INC. MKTW

Stake: Shares: CUSIP: 57064P107 Class: Class A Common Stock, par value of $0.0001

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
3 transactions
3 buys · 0 sales · 0 awards/exercises
Issuer Cluster
5 13D/G filings on this issuer
4 other filings besides this one
Filer Track Record
3 filings by this filer
2 other filings in the data moat
Short Interest · settle 2026-07-15
DTC 4.06
71,033 shares short · +8.7% vs prior

Post-Filing Returns · since 2024-08-12 on MKTW

+1 day
0.0%
+5 days
0.0%
+30 days
0.0%
+60 days
0.0%
+90 days
0.0%
+180 days
0.0%

Anchor price 18.92 on closest trading day on/after 2024-08-12. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-05-18 Stansberry Frank Porter director, 10%+ owner Buy 3,523 $16.50 $58K
2026-05-18 Stansberry Frank Porter director, 10%+ owner Buy 100 $16.46 $2K
2026-05-15 Stansberry Frank Porter director, 10%+ owner Buy 11 $16.71 $184

Other 13D/G Filings on MARKETWISE, INC.

FiledFormFilerStakeShares
2024-07-08 SC Stansberry Frank Porter view →
2023-05-03 SC Stansberry Frank Porter view →
2023-03-14 SC Stansberry Frank Porter view →
2022-09-20 SC Greenhaven Road Investment Management, L.P. view →

Other Filings by Greenhaven Road Investment Management, L.P.

FiledFormIssuerStakeShares
2024-07-22 SC Barnes & Noble Education, Inc. BNED view →
2022-09-20 SC MARKETWISE, INC. MKTW view →

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