ECOR · electroCore, Inc. · Insider Trading

This Form 4 is being filed late due to an inadvertent administrative oversight and is being reported herein promptly upon discovery of the administrative oversight.

The price in Column 4 is a weighted average of shares purchased at prices ranging from $9.60 to $9.84. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes 274,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 56,930 shares that have vested pursuant to previously issued Deferred Stock Units (DSUs); and 15,572 unvested DSUs. All such vested shares and unvested shares were previously reported on Form 4 filings at the time of grant.

This amended Form 4 amends the original filing made on September 14, 2026 to report the transaction code in Column 3 as 'P'. The original filing inadvertently reported the transaction code in Column 3 as 'A'.

Includes 125,000 shares of Common Stock issuable pursuant to previously issued restricted stock units (RSUs), consisting of (i) 23,333 RSUs that will vest on April 13, 2027, (ii) 23,334 RSUs that will vest on April 13, 2028, (iii) 23,333 RSUs that will vest on April 13, 2029, (iv) 18,333 RSUs that will vest on September 8, 2027, (v) 18,334 RSUs that will vest on September 8, 2028, and (vi) 18,333 RSUs that will vest on September 8, 2029; provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date; provided further, however, that all such RSUs shall vest, if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or the Reporting Person's resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Represents a grant of Restricted Stock Units ("RSUs") as a part of an annual director award which vest in 12 equal monthly installments from the grant date; provided, however, that the RSUs shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 7,637 vested RSUs and 22,912 unvested RSUs.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person (RP) remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 35,594 shares that have vested pursuant to previously issued Restricted Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person (RP) remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 29,011 shares that have vested pursuant to previously issued Deferred Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Includes 1,665 shares held in NeuroSpine Ventures; an entity in which the RP has no voting or dispositive power over the shares. Accordingly, the RP disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 84,032 shares that have vested pursuant to previously issued Deferred Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Annual Deferred Stock Units ("DSUs") award which vests in 12 equal monthly installments from the grant date; provided, however, that the DSUs shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person ("RP") remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 274,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; and 56,930 shares that have vested pursuant to previously issued deferred stock units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Represents a grant of Restricted Stock Units ("RSUs") as a part of an annual director award which vest in 12 equal monthly installments from the grant date; provided, however, that the RSUs shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 7,385 vested RSUs, 25,894 unvested RSUs and 1,391 shares of common stock.

The restricted stock units (RSUs) vest one-third on the first anniversary of the grant date, and the remainder vest in equal increments on each successive one-year anniversary thereafter for the next two years, provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The restricted stock units (RSUs) vest one-third on the first anniversary of the grant date, and the remainder vest in equal increments on each successive one-year anniversary thereafter for the next two years, provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 70,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of 23,333 RSUs that will vest on April 13, 2027, 23,334 RSUs that will vest on April 13, 2028 and 23,333 RSUs that will vest on April 13, 2029; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The price in Column 4 is a weighted average of shares sold at prices ranging from $9.29 to $9.50. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The price in Column 4 is a weighted average of shares sold at prices ranging from $9.70 to $10.25. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The price in Column 4 is a weighted average of shares sold at prices ranging from $10.14 to $10.31. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,334 shares will vest on January 15, 2027 and (b) 3,333 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2029, and (b) 8,334 shares will vest on January 26, 2028; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The price in Column 4 is a weighted average of shares purchased at prices ranging from $9.83 to $9.95. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes 269,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 2,218 unvested shares underlying deferred stock units ("DSUs"); and 54,712 shares that have vested pursuant to previously issued DSUs. All such vested shares were previously reported on Form 4 filings at the time of grant.

The price in Column 4 is a weighted average of shares sold at prices ranging from $8.95 to $9.09. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes 2,889 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,333 shares will vest on January 15, 2027 and (b) 3,334 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2028, and (b) 8,334 shares will vest on January 26, 2029; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The RP sold 3,000 shares of the Issuer's common stock in the reported transaction upon the vesting and settlement of previously issued Restricted Stock Units (RSUs), all of which were previously reported by the RP on a Form 4 pursuant to Section 16 of the Exchange Act, solely to satisfy tax withholding obligations incurred upon vesting and settlement.

Includes 9,556 shares of Common Stock, and 82,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,333 shares will vest on January 15, 2027 and (b) 3,334 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2028, and (b) 8,334 shares will vest on January 26, 2029; and (iv) 45,000 shares, which vests in full on December 31, 2026; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 259,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 8,872 unvested shares underlying deferred stock units ("DSUs"); and 69,797 shares that have vested pursuant to previously issued DSUs. All such vested shares were previously reported on Form 4 filings at the time of grant.

Includes 259,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 8,872 unvested shares underlying deferred stock units ("DSUs"); and 69,797 shares that have vested pursuant to previously issued DSUs. All such vested shares were previously reported on Form 4 filings at the time of grant.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.00 to $8.52 per share between 04/23/26 and 05/26/26 subject to Rule 144. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold by him at each separate price.

The restricted stock units (RSUs) vest one-third on the first anniversary of the grant date, and the remainder vest in equal increments on each successive one-year anniversary thereafter for the next two years, provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The reported transaction resulted in a claim under Section 16(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") amounting to $1,182. The Reporting Person (RP) voluntarily paid the full amount to the Issuer.

The RP sold 16,072 shares of the Issuer's common stock in the reported transaction upon the vesting and settlement of previously issued Restricted Stock Units (RSUs), all of which were previously reported by the RP on a Form 4 pursuant to Section 16 of the Exchange Act, solely to satisfy tax withholding obligations incurred upon vesting and settlement.

Includes (i) 3,665 shares, net of the amount sold in the reported transaction, issued pursuant to previously issued RSUs that vested on a prorated basis as of April 1, 2026, in accordance with the vesting provisions of the consulting and separation agreement (the "Agreement") between the RP and the Issuer; and (ii) 43,200 RSUs previously issued to the RP that shall continue to vest, subject to the RP's continued consulting services under the Agreement, through the applicable vesting dates, in equal monthly installments of 3,600 RSUs per month.

Represents a grant of Restricted Stock Units (RSUs) of the Issuer. The grant vests in full on December 31, 2026, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (ii) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 12,556 shares of Common Stock, and 37,000 shares of Common Stock issuable pursuant to previously issued RSUs, comprised of: (i) 6,667 shares, of which (a) 3,333 shares will vest on January 15, 2027 and (b) 3,334 shares will vest on January 15, 2028; (ii) 5,333 shares, which will vest on January 12, 2027; and (iii) 25,000 shares, of which (a) 8,333 shares will vest on January 26, 2027 and January 26, 2028, and (b) 8,334 shares will vest on January 26, 2029; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 259,106 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 26,615 unvested shares underlying deferred stock units ("DSUs"); and 52,054 shares that have vested pursuant to previously issued DSUs. All such vested shares were previously reported on Form 4 filings at the time of grant.

Represents a grant of Restricted Stock Units of the Issuer. The grant vests (i) with respect to 33% of the underlying shares of Common Stock on each of the first, second, and third anniversaries of the date of grant, in each case provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (ii) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 75,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 50,000 of such shares have vested and (ii) 25,000 of such shares will potentially vest on January 16, 2027. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes 50,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 33,333 of such shares have vested and (ii) 16,667 of such shares will potentially vest on August 4, 2026. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes 40,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 13,333 of such shares have vested and (ii)26,667 of such shares will potentially vest in one-half increments on each of January 18, 2027, and January 18, 2028. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Represents a grant of Restricted Stock Units of the Issuer. The grant vests (i) with respect to 33% of the underlying shares of Common Stock on each of the first, second, and third anniversaries of the date of grant, in each case provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (ii) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

Includes 21,667 shares of Common Stock issuable pursuant to previously issued restricted stock units: (i) 10,000 shares of which (a) 3,333 shares of Common Stock have vested and are eligible for sale, (b) 3,333 shares of Common Stock will vest on January 15, 2027, and (c) 3,334 shares of Common Stock will vest on January 15, 2028; and (ii) 11,667 shares of which (a) 6,334 have vested and are eligible for sale, and (b) 5,333 shares of Common Stock will vest on January 12, 2027; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The price in Column 4 is a weighted average of shares sold at prices ranging from $5.03 to $5.07. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes 21,667 shares of Common Stock issuable pursuant to previously issued restricted stock units: (i) 10,000 shares of which will vest (a) with respect to 3,333 shares of Common Stock, on each of January 15, 2026 and January 15, 2028, and (b) with respect to 3,334 shares of Common Stock, on January 15, 2027; and (ii) 11,667 shares of which (a) 1,000 have vested and are eligible for sale, and (b) 10,667 will vest (i) with respect to 5,334 shares of Common Stock, on January 12, 2026, and (ii) with respect to 5,333 shares of Common Stock, on January 12, 2027; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the price at which the RP purchased the shares.

Includes an additional 75,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 25,000 of such shares have vested and (ii) 50,000 of such shares will potentially vest in one-half increments on each of January 16, 2026, and January 16, 2027. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes an additional 50,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 33,333 of such shares have vested and (ii) 16,667 of such shares will potentially vest on August 4, 2026. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes an additional 40,000 shares issuable pursuant to previously issued Restricted Stock Units: 40,000 of such shares will potentially vest in one-third increments on each of January 18, 2026, January 18, 2027, and January 18, 2028. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

The price in Column 4 is a weighted average of shares sold at prices ranging from $6.0602 to $6.31. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes 23,667 shares of Common Stock issuable pursuant to previously issued restricted stock units: (i) 10,000 shares of which will vest (a) with respect to 3,333 shares of Common Stock, on each of January 15, 2026 and January 15, 2027, and (b) with respect to 3,334 shares of Common Stock, on January 15, 2028; and (ii) 13,667 shares of which (a) 3,000 have vested and are eligible for sale, and (b) 10,667 will vest (i) with respect to 5,333 shares of Common Stock, on January 12, 2026, and (ii) with respect to 5,334 shares of Common Stock, on January 12, 2027; provided that (x) the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date, and (y) if and to the extent not already vested, in the case of termination of the Reporting Person without "cause" or resignation for "good reason" within two years after a "change in control" as such terms are defined in the Issuer's Executive Severance Policy.

The restricted stock units vest in 12 equal quarterly increments over a period of 36 months from the grant date, provided that the Reporting Person (RP) remains in continuous service with the Issuer or an affiliate through the applicable vesting date; provided further, that the restricted stock units vest in full on the date immediately prior to a change of control if the RP remains a member of the Issuer's board of directors through such date.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 52,054 shares that have vested pursuant to previously issued Deferred Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Annual Deferred Stock Units ("DSUs") award which vests in 12 equal monthly installments from the grant date; provided, however, that the DSUs shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person ("RP") remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

In addition to the DSUs listed in Column 4, consists of 217,051 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; and 52,054 shares that have vested pursuant to previously issued DSUs. All such vested shares were previously reported on Form 4 filings at the time of grant.

Annual Restricted Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Restricted Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 16,583 shares that have vested pursuant to previously issued Restricted Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person (RP) remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 10,000 shares that have vested pursuant to previously issued Deferred Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

Includes 1,665 shares held in NeuroSpine Ventures; an entity in which the RP has no voting or dispositive power over the shares. Accordingly, the RP disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Annual Deferred Stock Units award which vests in 12 equal monthly installments from the grant date; provided, however, that the Deferred Stock Units shall vest in full on the earlier of (i) the close of business one business day prior to the Issuer's next annual stockholder meeting following the grant date, and (ii) the date immediately prior to a change of control, in each case, provided that the Reporting Person remains in continuous service with the Issuer or an affiliate through the applicable vesting date.

Includes 65,021 shares that have vested pursuant to previously issued Deferred Stock Units. All such vested shares were previously reported on Form 4 filings at the time of grant.

The price in Column 4 is a weighted average of shares purchased at prices ranging from $4.34 to $4.55. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Consists of 217,051 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 50,672 shares that have vested pursuant to previously issued Deferred Stock Units (DSUs); and 1,382 shares issuable pursuant to DSUs that vest monthly through September 3, 2025; provided that such DSUs vest in full on the earlier of (i) one business day prior to the Issuer's next annual stockholder meeting, and (ii) the date immediately prior to a change of control, in each case, provided the RP remains in service with the Issuer through the applicable vesting date.

The price in Column 4 is a weighted average of shares purchased at prices ranging from $4.225 to $4.25. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Includes an additional 75,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 25,000 of such shares have vested and (ii) 50,000 of such shares will potentially vest in one-half increments on each of January 16, 2026, and January 16, 2027. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes an additional 50,000 shares issuable pursuant to previously issued Restricted Stock Units: (i) 33,333 of such shares have vested and (ii) 16,667 of such shares will potentially vest on August 4, 2026. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

Includes an additional 40,000 shares issuable pursuant to previously issued Restricted Stock Units: 40,000 of such shares will potentially vest in one-third increments on each of January 18, 2026, January 18, 2027, and January 18, 2028. All such unvested shares were previously reported on a Form 4 filing at the time of grant.

These restricted stock units, which convert into common stock on a one-for-one basis ("RSUs"), were granted under the issuer's 2018 Omnibus Equity Compensation Plan and, except as otherwise provided in the award agreement, vest in 12 equal quarterly increments over a period of 36 months from the date of grant.

Includes 22,156 unvested RSUs and 1,391 shares of common stock.

Includes 59,493 shares vested pursuant to previously issued Deferred Stock Units (DSUs); and 5,528 shares issuable pursuant to DSUs that vest monthly through 9/3/2025; provided that such DSUs vest in full on the earlier of (i) one business day prior to the Issuer's next annual stockholder meeting, and (ii) the date immediately prior to a change of control, in each case, provided the Reporting Person remains in service with the Issuer through the applicable vesting date.

The price in Column 4 is a weighted average of shares purchased at prices ranging from $4.73 to $4.80. The Reporting Person (RP) undertakes to provide to the Issuer, any securityholder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price.

Consists of 202,051 shares owned directly by the RP; 1,296 shares owned by a trust for the benefit of the RP's family; 11,000 shares owned by a trust for the benefit of the RP; 46,526 shares that have vested pursuant to previously issued Deferred Stock Units (DSUs); and 5,528 shares issuable pursuant to DSUs that vest monthly through September 3, 2025; provided that such DSUs vest in full on the earlier of (i) one business day prior to the Issuer's next annual stockholder meeting, and (ii) the date immediately prior to a change of control, in each case, provided the RP remains in service with the Issuer through the applicable vesting date.