13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
SCHEDULE 13G Filed 2026-09-24 Event — SEC 0001595888-26-000118 →

JANE STREET GROUP, LLC → IP STRATEGY HOLDINGS, INC. IPST

Stake: — Shares: — Class: Common Stock, par value $0.0001 per share

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)
12 transactions
0 buys · 0 sales · 6 awards/exercises
Issuer Cluster
1 13D/G filings on this issuer
0 other filings besides this one
Filer Track Record
29 filings by this filer
28 other filings in the data moat
Short Interest · settle 2026-09-30
DTC 1.00
30,915 shares short · +201.7% vs prior

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-04-02 Marker Beth A officer Option exercise 1,875 — —
2026-04-02 Marker Beth A officer F 556 $0.24 $136
2026-04-02 Perkins Danielle B officer Option exercise 1,875 — —
2026-04-02 Perkins Danielle B officer F 773 $0.24 $189
2026-02-02 Stiefel Justin B director, officer F 2,471 $1.08 $3K
2026-02-02 Stiefel Jennifer D H director, officer F 2,471 $1.08 $3K
2026-02-02 Stiefel Jennifer D H director, officer Option exercise 8,333 — —
2026-02-02 Stiefel Jennifer D H director, officer F 17,296 $1.08 $19K
2026-02-02 Stiefel Jennifer D H director, officer Option exercise 58,333 — —
2026-02-02 Stiefel Justin B director, officer Option exercise 58,333 — —
2026-02-02 Stiefel Justin B director, officer F 17,296 $1.08 $19K
2026-02-02 Stiefel Justin B director, officer Option exercise 8,333 — —

Other Filings by JANE STREET GROUP, LLC

FiledFormIssuerStakeShares
2026-10-13 SCHEDULE 13G AETHLON MEDICAL INC — — view →
2026-10-08 SCHEDULE 13G Wheeler Real Estate Investment Trust, Inc. — — view →
2026-09-18 SCHEDULE 13G Maison Solutions Inc. — — view →
2026-09-10 SCHEDULE 13G FOCUS UNIVERSAL INC. — — view →
2026-09-04 SCHEDULE 13G X-Energy, Inc. — — view →
2026-09-03 SCHEDULE 13G BIOVIE INC. — — view →
2026-08-21 SCHEDULE 13G CDT Environmental Technology Investment Holdings Ltd — — view →
2026-08-21 SCHEDULE 13G Neo-Concept International Group Holdings Ltd — — view →
2026-08-19 SCHEDULE 13G C3is Inc. — — view →
2026-07-29 SCHEDULE 13G AEHR TEST SYSTEMS — — view →
2026-07-15 SCHEDULE 13G Agape ATP Corp — — view →
2026-07-13 SCHEDULE 13G ETSY INC — — view →
2026-07-02 SCHEDULE 13G HERTZ GLOBAL HOLDINGS, INC HTZWW — — view →
2026-07-02 SCHEDULE 13G CXApp Inc. CXAIW — — view →
2026-07-02 SCHEDULE 13G SUNation Energy, Inc. SUNE — — view →
2026-06-25 SCHEDULE 13G Leslie's, Inc. LESL — — view →
2026-06-24 SCHEDULE 13G Galaxy Digital Inc. GLXY — — view →
2026-06-24 SCHEDULE 13G Ascent Solar Technologies, Inc. ASTI — — view →
2026-06-23 SCHEDULE 13G Sleep Number Corp SNBRQ — — view →
2026-06-23 SCHEDULE 13G Jiuzi Holdings, Inc. JZXN — — view →
Showing 20 of 28

Want this depth on every filing the moment it hits SEC EDGAR?

Full feed access · API · daily intelligence brief · custom alerts. From $49/mo.

See pricing →