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COAGHemab Therapeutics Holdings, Inc. · Insider ownership research

No officer or director has bought or sold Hemab Therapeutics Holdings, Inc. stock in the past 12 months

No officer or director has bought or sold Hemab Therapeutics Holdings, Inc. stock in the past 12 months. An outside holder did trade in that period: RA CAPITAL MANAGEMENT, L.P. bought shares. Outside holders are reported separately.

Updated Oct 13, 2026 from SEC filings · covers Oct 14, 2025 to Oct 13, 2026
0
buyers among officers and directors, past 12 months
0 of 8
officers and directors sold shares, past 12 months
Latest filing: Filed May 4 for a conversion on May 4. John Maraganore converted 36K shares between classes. Filing
SEC ownership filings: 22 filed in the 12 months to Oct 13, 2026; 22 on record since Apr 30, 2026 · See the evidence

What stands out

Nothing notable: no open-market sales or purchases by officers or directors in this period.

No officer or director sold shares in this period. 8 are left out

i
Left out: Mads Behrndt-Eriksen, Benny Sorensen, Catherine Madigan, Akshay Vaishnaw, Linda Bain, Ananthram Murthy, John Maraganore and Keli Walbert (share of stake is being verified).
Disclosed company stock is not an insider's whole wealth.

Recent activity

Past 30 days, Sep 14, 2026 to Oct 13, 2026

No officer or director trades were reported for the past 30 days.

Outside holders, reported separately

AI DEN-MAB LLC, RA CAPITAL MANAGEMENT, L.P. and Novo Holdings A/S reported no open-market sales in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.

Details

Common questions

Is the Hemab Therapeutics Holdings, Inc. CEO selling stock?

No. Benny Sorensen reported no open-market sales in the past 12 months.

Are any Hemab Therapeutics Holdings, Inc. insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

The evidence

Who sold0 officers and directors: amount, % of holdings, trading plan
Who soldAmount% of holdingsTrading plan

Outside holder, reported separately: AI DEN-MAB LLC (a 10% owner, not part of management). No open-market sales reported in the period. Latest filing

Outside holder, reported separately: RA CAPITAL MANAGEMENT, L.P. (a 10% owner, not part of management). No open-market sales reported in the period. Latest filing

Outside holder, reported separately: Novo Holdings A/S (a 10% owner, not part of management). No open-market sales reported in the period. Latest filing

The full ownership picture0 of 8 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

InsiderHeld Oct 13, 2025SoldHeld Oct 13, 2026Still held
Mads Behrndt-Eriksen
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Mads Behrndt-Eriksen are complete.
Chief Financial Officer and General Manager
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Mads Behrndt-Eriksen

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Mads Behrndt-Eriksen are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
49,016$18.00Apr 29, 2036$342K

Estimate: options held × ($24.98 − strike price), using the most recent insider trade price on Form 4 (Jun 16, 2026), not a market close.

Benny Sorensen
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Benny Sorensen are complete.
President and Chief Executive Officer 24.1, Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Benny Sorensen

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Benny Sorensen are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Catherine Madigan
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Catherine Madigan are complete.
Chief Medical Officer
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Catherine Madigan

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Catherine Madigan are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
49,016$18.00Apr 29, 2036$342K

Estimate: options held × ($24.98 − strike price), using the most recent insider trade price on Form 4 (Jun 16, 2026), not a market close.

Akshay Vaishnaw
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Akshay Vaishnaw are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Akshay Vaishnaw

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Akshay Vaishnaw are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Linda Bain
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Linda Bain are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Linda Bain

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Linda Bain are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Ananthram Murthy
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Ananthram Murthy are complete.
Chief Operating Officer
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Ananthram Murthy

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Ananthram Murthy are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
John Maraganore
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for John Maraganore are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for John Maraganore

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for John Maraganore are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Keli Walbert
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Keli Walbert are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Keli Walbert

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Keli Walbert are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
36,000$35.72Sep 23, 2036$0

Estimate: options held × ($24.98 − strike price), using the most recent insider trade price on Form 4 (Jun 16, 2026), not a market close.

Holdings and share of stake for Hemab Therapeutics Holdings, Inc. are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

Known gaps and uncertainty8 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Hemab Therapeutics Holdings, Inc. are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology22 filings on record, 22 filed in the 12-month period, and how we read them

All 22 Forms 3, 4 and 5 on record for Hemab Therapeutics Holdings, Inc. (SEC CIK 2114044), filed from Apr 30, 2026 to Sep 25, 2026; 22 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (1)No filing in 18 months; last reported balances, not in any total
NameLast filedLast reported balance
Laura TadvalkarNo balance on record

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